can you get pregnant in your 40s?

Can You Get Pregnant in Your 40s?

6 min read

Can you get pregnant in your 40s? Absolutely—but with a few disclaimers. Getting pregnant in your 40s can often mean more prep, managed expectations, and a trip to a fertility expert to help if you’re able. Here’s what to know and a few tips for getting pregnant in your 40s.

What are my chances of getting pregnant in my 40s?

The answer depends on several factors, including your age, whether you're still ovulating, your ovarian reserve, your partner's sperm health, and whether there are other fertility factors at play. For spontaneous conception (i.e. without outside help), the chance of pregnancy is about 5 to 10% per month at age 40, declines to around 5% per month by age 43, and is less than 1 to 2% per month by age 45. While spontaneous pregnancies absolutely happen in the 40s, it's important to set realistic expectations—fertility declines each year because both the number and quality of eggs decrease with age.


It’s also important to note that many clinics won’t do egg retrievals after 45 because the chances of conception are so low. Make sure you and your clinic set expectations up front.

  • 40 years old: 5 to 10% chance of conception each month

  • 43 years old: 5% chance of conception each month

  • 45 years old: 1 to 2% chance of conception each month

Do I need fertility treatment to get pregnant in my 40s?

Many people do need help if they’re trying to get pregnant in their 40s. The good news is that fertility treatment can improve your chances, but it's important to understand what each option can—and can't—do. 


IUI (intrauterine semnination—read more about it here) success rates remain relatively low after age 40, generally around 5 to 10% per cycle. While IUI helps sperm reach the egg, it doesn't improve egg quality. 


IVF offers the highest chance of pregnancy when using your own eggs, but success still depends largely on age and embryo quality. National CDC data show that live birth rates with IVF using a woman's own eggs are roughly 20 to 25% per egg retrieval at age 40, decreasing to about 10 to 15% by age 43, with lower success beyond that. 


For those with significantly diminished ovarian reserve or multiple unsuccessful IVF cycles, donor egg IVF offers the highest success rates because the age of the egg—not the uterus—is the biggest driver of success. 


Every woman's fertility journey is different, so the best way to understand your individual chances is with an evaluation by a reproductive endocrinologist.

If I’m perimenopausal or have irregular cycles can I get pregnant?

As long as you're still ovulating and haven't reached menopause (which is defined as 12 consecutive months without a period) technically, it’s still possible to get pregnant on your own. In fact, many are surprised by an unexpected pregnancy in their 40s because they assume irregular periods or perimenopause mean they're no longer fertile. That's not necessarily true! Ovulation can still happen, even if your cycles are less predictable, which is why contraception is still recommended (if you’re trying to prevent pregnancy) until menopause is confirmed.


That said, fertility does decline significantly with age—both the number and quality of the eggs remaining decrease over time. By age 40, even if you do conceive, the risk of miscarriage is higher because a greater proportion of eggs have chromosomal abnormalities. Ovarian reserve tests like AMH can estimate how many eggs remain, but they don't tell us how healthy those eggs are or predict your ability to conceive spontaneously.

Tips to help you get pregnant in your 40s

While we can't stop the natural aging of eggs, there are steps you can take to optimize your fertility and improve your chances of conceiving in your 40s. 


Prenatals

If you’re thinking about pregnancy, one of the simplest things you can do is start a high-quality prenatal vitamin before you start trying. Look for a prenatal that includes key nutrients recommended during pregnancy, including Folic Acid, Iron, Choline, Vitamin B12, Vitamin D, Iodine, and other B vitamins. 


Nutrients

There’s another piece that’s important when talking about preconception health (especially when older): cellular health. Reproductive cells that affect egg quality are metabolically active and rely heavily on mitochondrial energy production. Normal cellular metabolism creates reactive oxygen species, and too much oxidative stress can affect cellular membranes, proteins, and DNA. Increased age means increased oxidative stress, which can cause mitochondria to slow down and make mistakes in replication. This is why nutrients with antioxidant properties, including Vitamins C and E, Selenium, and Zinc, are important. Some fertility-focused supplements also include antioxidants like CoQ10 and NAC, which provide mitochondria with the building blocks to make energy, and protect cells from age-related oxidative stress.


Antioxidants

Antioxidants have some great studies to back up their use, especially as part of targeted fertility treatment—but they are just one part. They can’t top the inevitable decline in egg quality and quantity that comes with advancing age. But they can be used as part of an overall approach—often with the help of clinics and doctors—to give you the best possible chances of pregnancy in your 40s. 


A Balanced Diet

It’s important to remember that your prenatal is not a substitute for a balanced diet. ACOG and Health Canada recommends getting nutrients from a variety of foods, including fruits and vegetables, whole grains, protein-rich foods, and dairy or fortified alternatives. For omega-3s, ACOG recommends 2 to 3 servings of low-mercury fish or seafood per week when possible, while avoiding high-mercury fish. If you don’t eat fish, talk with your doctor about whether a DHA or omega-3 supplement makes sense for you.


Ultimately, the goal is to build a strong nutritional foundation before pregnancy, choose a prenatal you can take consistently, and individualize additional supplementation based on your diet, labs, medical history, and fertility goals.

Fertility Diet to improve Egg Quality


Track your ovulation (and take steps to get it back on track if needed!):

If you're still ovulating, timing intercourse around ovulation can maximize your chances of pregnancy. This can be done by tracking LH surge kits (ovulation predictor kits), paying attention to your body's natural fertility signs—such as clear, slippery, egg white-like cervical mucus that becomes more abundant around ovulation—or by working with your fertility specialist to monitor ovulation with ultrasounds and hormone testing if your cycles are irregular or time is especially important. Ovulation over 40 can become more irregular, so tracking is a must.


The biggest tip? Don’t wait too long to get extra help—even if you don’t have any red flags or ovulation issues. Fertility declines more rapidly after age 40, so time matters. If you're 40 or older and trying to conceive, it's reasonable to meet with a reproductive endocrinologist as soon as you start trying (or even before!) rather than waiting 6 months or a year. A fertility evaluation can assess ovarian reserve, confirm ovulation, evaluate the uterus and fallopian tubes, and ensure there aren't additional factors—such as male factor infertility—that could further reduce your chances.


And if you are trying with a male partner also over 40, there are steps he can take too—starting with supplements to support sperm health.


Getting pregnant in your 40s is possible—and more and more people do it both spontaneously and with the help of a fertility clinic. But it might take a bit more attention to lifestyle, nutrients, and your doctor’s advise than if you were younger. 


Dr. Nirali Jain, MD

Dr. Nirali Shah Jain, MD

Dr. Nirali Shah Jain, is a board-certified OB/GYN and fertility specialist dedicated to evidence-based, compassionate fertility care. She’s passionate about making fertility science accessible and the fertility journey more manageable for patients wherever they are. 

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