Fertility Over 40: treatment options and next steps

If you're trying to have a baby in your 40s, you may be wondering what your options are. Fertility changes with age but being over 40 doesn't automatically determine what your journey will look like. Some women conceive naturally, while others may benefit from fertility treatment using their own eggs or donor eggs. Understanding your individual fertility early can help you make informed decisions about your treatment options and next steps.

This guide explains how fertility changes after 40, what ovarian reserve testing can and can't tell you, and how London Women’s Clinic fertility specialists use this information to recommend the most appropriate treatment pathway for you.

What changes after 40 when you are trying to conceive?

Trying to conceive in your forties can feel overwhelming, especially if you've already been trying for some time or experienced unsuccessful treatment. Fertility does change with age, but that doesn't mean pregnancy is no longer possible. The most important thing is getting a clear picture of your fertility and seeking advice sooner rather than later.

Decreasing egg quantity and quality

One of the biggest changes after 40 is the quantity of eggs that remain in your ovaries, known as your ovarian reserve. This naturally declines with age – meaning fewer eggs are available to develop and mature each month – although the rate of which this happens varies from person to person.

Egg quality also changes over time. As eggs age, they are more likely to have chromosomal abnormalities, making fertilisation, embryo development and implantation less likely. It can also increase the risk of miscarriage, even when conception occurs naturally.

Time matters, but so does personalised assessment

While age plays an important role, it is only one part of the picture. Your medical history, ovarian reserve, previous pregnancies or fertility treatment, and your partner's fertility, all help determine which options may be right for you. Looking at these factors together allows your fertility specialist to recommend a treatment plan based on your circumstances, rather than your age alone.

What should you do first if you are over 40 and trying for a baby?

If you're over 40 and have been trying to conceive without success, the first step is to book a fertility assessment with a specialist. Early assessment can help clarify the factors affecting your fertility and ensure you don't lose valuable time exploring the most beneficial treatment options.

At London Women's Clinic, your initial consultation is designed to build a complete picture of your fertility. This will usually include:

●      a discussion about your medical history, menstrual cycle and any previous pregnancies or fertility treatment

●      an ultrasound scan to assess your ovaries and perform an antral follicle count (AFC)

●      hormone testing, including an Anti-Müllerian Hormone (AMH) blood test to assess ovarian reserve

●      ovulation assessment, where appropriate

●      a semen analysis if you're trying to conceive with a partner, as male fertility can also affect your chances of pregnancy

Your fertility specialist will interpret these results alongside your age, medical history and family-building goals before guiding your next steps. For some women, this may mean continuing to try naturally for a little longer. For others, it may involve IVF using their own eggs, donor egg treatment or further investigations before making any decisions.

A practical fertility over 40 decision tree

Every fertility journey is different, which is why there isn't a single treatment pathway that's right for everyone. The most appropriate approach depends on your ovarian reserve, previous fertility treatment, medical history and your personal preferences. Use the guide below to understand where you may fit before discussing your options with a fertility specialist.

If you have not had fertility tests yet

The first step is to book a fertility assessment. Understanding your ovarian reserve, hormone levels and overall reproductive health provides the information needed to recommend the treatment pathway that’s right for you. Your first review will usually include an ultrasound scan, AMH testing, a review of your medical and fertility history, and a semen analysis if you're trying to conceive with a partner.

If your ovarian reserve is reassuring for your age

A reassuring ovarian reserve may mean IVF using your own eggs is a suitable option, although it doesn't guarantee pregnancy. Your fertility specialist will also consider factors such as egg quality, previous pregnancies and your overall health before discussing your likely prognosis and whether IVF is right for you.

Learn more about how IVF treatment works with London Women’s Clinic.

If your ovarian reserve is low or previous response was poor

A lower ovarian reserve doesn't necessarily mean treatment isn't possible, but it can influence which options are most appropriate. Depending on your individual circumstances, your fertility specialist may review your previous IVF cycles and discuss tailored ovarian stimulation. In some situations, they may also advise that further treatment with your own eggs is unlikely to be beneficial and suggest using donor eggs to offer a better chance of success.

If you have had failed IVF cycles before

If you've previously had IVF that hasn't resulted in pregnancy, it's important to understand why before deciding what to do next. Reviewing how your ovaries responded to stimulation, embryo development, transfer history and any other factors affecting implantation can help determine whether a different treatment approach may be more beneficial before considering another cycle.

Find out more about our infertility investigations and how we can support you at London Women’s Clinic.

Understanding ovarian reserve after 40

Ovarian reserve refers to the number of eggs remaining in your ovaries. While it naturally declines with age, it varies from person to person, which is why fertility specialists use several tests together to build a clearer picture of your fertility. No single test can predict whether you'll become pregnant, but they can help estimate how your ovaries may respond to fertility treatment and guide your next decisions.

Anti-Müllerian Hormone (AMH)

AMH is a hormone produced by small follicles within the ovaries. An AMH blood test is commonly used to estimate ovarian reserve by indicating how many eggs may remain.

A higher AMH level suggests a greater ovarian reserve, while a lower result may indicate fewer remaining eggs. However, AMH doesn't measure egg quality or predict your ability to conceive naturally. Instead, it helps your fertility specialist understand how your ovaries may respond to fertility medication during IVF.

Learn more about how our at-home AMH Test works.

Antral follicle count (AFC)

An antral follicle count (AFC) is performed during a transvaginal ultrasound scan. It measures the number of small follicles visible in your ovaries.

Like AMH, AFC provides an indication of ovarian reserve and helps predict how many eggs may respond during an IVF cycle. Together, AFC and AMH provide a more complete picture of ovarian reserve.

Follicle-stimulating hormone (FSH)

FSH is a hormone involved in stimulating the growth of ovarian follicles. It's usually measured with a blood test early in your menstrual cycle.

Higher FSH levels can suggest that the ovaries are working harder to recruit eggs, which may indicate a reduced ovarian reserve. However, FSH levels can fluctuate from month to month, so they are interpreted alongside other test results rather than in isolation.

Ultrasound assessment

Alongside counting antral follicles, an ultrasound allows your fertility specialist to assess the ovaries, uterus and other aspects of your reproductive health. This can help identify factors such as uterine fibroids, endometrial polyps, ovarian cysts or other conditions that may affect fertility or influence your treatment options.

Can you use your own eggs after 40?

Many women over 40 are able to have IVF using their own eggs, but whether this is the most appropriate option depends on your own fertility profile. While ovarian reserve helps estimate how your ovaries may respond to treatment, egg quality also plays an important role in determining the likelihood of a successful pregnancy.

As eggs age, they are more likely to have chromosomal abnormalities, which can affect fertilisation, embryo development and implantation. This means that even if several eggs are collected during IVF over 40, not all will develop into healthy embryos suitable for transfer.

This is why your fertility specialist will look at more than your age or test results alone. Your ovarian reserve, previous pregnancies or fertility treatment, medical history and how your ovaries are expected to respond to stimulation all help build a clearer picture of your individual prognosis.

For some women, IVF using their own eggs may offer a realistic chance of pregnancy. For others, your fertility specialist may recommend discussing alternative options, such as donor egg treatment, if they believe this is likely to provide a better chance of success. The aim is always to recommend the treatment pathway most likely to help you achieve a healthy pregnancy.

When should donor eggs be part of the conversation?

Donor egg treatment may be discussed when the likelihood of achieving a successful pregnancy using your own eggs is very low. This could be because your ovarian reserve is significantly reduced, previous IVF cycles have shown a poor response to stimulation, or embryo development has been unsuccessful despite treatment.

For some women, using donor eggs over 40 may offer a better chance of pregnancy because the age of the donated eggs, rather than the age of the person carrying the pregnancy, has the greatest influence on egg quality and embryo development.

Choosing donor egg treatment is a personal decision, and it isn't simply based on age alone. Your fertility specialist will discuss your test results, previous treatment history, your chances of success using your own eggs and your personal preferences before recommending whether donor eggs should form part of the conversation.

Own eggs vs donor eggs after 40

Whether IVF over 40 involves your own eggs or donor eggs depends on your individual fertility profile and treatment goals. Both pathways aim to achieve a healthy pregnancy, but they address different aspects of fertility.

IVF using your own eggs

Who is it best for?
Women with a reasonable prognosis using their own eggs based on fertility assessment.

What does it improve?
Your chance of pregnancy if your prognosis is favourable.

What doesn’t it change?
The natural age-related decline in egg quality.

How is the decision made?
Based on your ovarian reserve, expected response to treatment and overall prognosis.

IVF using donor eggs

Who is it best for?
Women with a very low ovarian reserve, over 40, poor embryo development, repeated unsuccessful IVF or where own-egg treatment is unlikely to be successful.

What does it improve?
Your chance of creating healthy embryos and achieving pregnancy where egg quality is the main limiting factor.

What doesn’t it change?
Factors such as uterine health, implantation or other medical conditions that may affect pregnancy.

How is the decision made?
Based on your fertility assessment, previous treatment outcomes and discussions about the treatment pathway most likely to offer success.

It's important to remember that there is no single "right" choice. The most appropriate treatment depends on your fertility assessment, medical history and personal preferences. Your fertility specialist will explain the likely benefits and limitations of each approach so you can make a decision that's right for you.

Where does embryo genetic testing fit?

As egg quality changes with age, embryos are more likely to have an incorrect number of chromosomes (aneuploidy). Chromosomal abnormalities are a common cause of failed implantation and miscarriage, which is why embryo genetic testing may be discussed as part of IVF over 40.

Preimplantation genetic testing for aneuploidy (PGT-A) is used to assess whether embryos have the correct number of chromosomes before embryo transfer. During IVF, a small number of cells are removed from each embryo and analysed to help embryologists identify embryos that are considered to be at lower risk of chromosomal abnormalities.

PGT-A is not recommended for everyone. At London Women's Clinic, it may be considered for selected patients depending on their age, the number of embryos available, treatment history and test results.

While PGT-A may improve pregnancy and live birth rates for some patients, it cannot improve egg quality or guarantee a successful pregnancy. Your fertility specialist will discuss the potential benefits, limitations and current evidence to help you decide whether it's the right option for you.

Find out more about how the process works and who it may be suitable for genetic embryo testing at London Women’s Clinic.

When to book a specialist review

If you're over 40 and trying to conceive, it's recommended that you seek specialist advice without delay rather than waiting 12 months, as fertility can change more rapidly with age.

You should also consider booking a fertility review if you:

●      have a low AMH result or reduced antral follicle count (AFC)

●      have irregular or absent menstrual cycles

●      have experienced one or more unsuccessful IVF cycles

●      have had recurrent miscarriage or pregnancy loss

●      are considering donor egg treatment and would like to understand whether it's the right option for you

●      have a medical condition or previous surgery that could affect your fertility

An early fertility assessment can provide clarity about your options and help you make informed decisions about the next steps, whatever stage of your fertility journey you're at.

Explore fertility treatment for over 40s at London Women's Clinic

If you're considering fertility treatment over 40, the best place to start is with a personalised fertility assessment. Our specialists will review your medical history, fertility test results and individual circumstances before discussing the treatment options that’s right for you.

Whether you're exploring IVF with your own eggs, donor egg treatment or simply want a clearer understanding of your fertility, we're here to help you make informed decisions with expert, compassionate support.

Explore fertility treatment for over 40s at London Women's Clinic

FAQs about fertility over 40

Can I still get pregnant naturally after 40?

Yes, it's still possible to get pregnant naturally after 40, but fertility declines with age because both the number and quality of eggs decrease over time. If you're 40 or over and have been trying to conceive without success, it's recommended that you arrange a fertility assessment promptly rather than waiting for a full year. An assessment can help identify any factors affecting your fertility and discuss the treatment options most likely to benefit you.

Is IVF worth trying after 40?

For many women, IVF over 40 can be a recommended treatment option, but whether it's likely to be successful depends on several factors. These include your age, ovarian reserve, egg quality, previous response to fertility treatment, medical history and any underlying fertility issues. A fertility specialist can assess your individual circumstances and discuss whether IVF using your own eggs, donor eggs or another treatment pathway is most appropriate.

What fertility tests should I have over 40?

There are a number of different fertility tests available to women over 40. A fertility assessment usually includes a combination of tests rather than relying on a single result. These may include:

●      Anti-Müllerian hormone (AMH) to estimate ovarian reserve

●      An antral follicle count (AFC) using ultrasound

●      A pelvic ultrasound to assess your ovaries and uterus

●      Hormone blood tests, including FSH where needed

●      Assessment of ovulation and menstrual history

●      Semen analysis if you're trying to conceive with a partner

Your fertility specialist will interpret these results together alongside your medical history to build a complete picture of your fertility.

What does low AMH mean after 40?

A low AMH level suggests that your ovaries may produce fewer eggs during IVF stimulation. It doesn't measure egg quality and should always be interpreted alongside your other fertility investigations alongside your age, ultrasound findings and medical history.

Are donor eggs more successful after 40?

For some women over 40, donor egg treatment may offer a better chance of pregnancy than IVF using their own eggs, particularly if egg quality has been significantly affected by age. Outcomes with donor eggs are largely influenced by the donor’s age and egg quality, however the recipient's overall health and uterine health remain important factors for a successful pregnancy. Whether donor egg treatment is the right option depends on your individual fertility assessment, medical history and treatment goals, and should always be discussed with a fertility specialist.

Can embryo testing help if I am over 40?

Embryo genetic testing (PGT-A) may be considered for some women over 40, particularly where there have been previous unsuccessful IVF cycles or miscarriage. The test assesses whether embryos have the expected number of chromosomes before transfer. However, it isn't suitable for everyone and doesn't improve egg quality or guarantee pregnancy. Your fertility specialist can explain the current evidence and whether PGT-A is suitable as part of your treatment.

How quickly should I seek fertility help after 40?

If you're aged 40 or over and are trying to conceive, it's recommended that you seek specialist advice without delay rather than waiting 12 months. You should also arrange a fertility assessment if you have irregular or absent periods, a history of miscarriage, known fertility problems, previous unsuccessful IVF treatment or concerns about your fertility. Early assessment can help you understand your options and avoid unnecessary delays.

Can I carry a pregnancy with donor eggs after 40?

Many women are able to carry a pregnancy using donor eggs after 40. Before treatment, your fertility specialist will review your uterine health, medical history and any factors that could affect pregnancy to ensure it's safe and appropriate to proceed. You'll also receive counselling and support to help you understand the treatment and make informed decisions about your care.

References / Further reading

NG257 Fertility problems: assessment and treatment - NICE (2026)

In vitro fertilisation (IVF) - HFEA (2016)