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When Are You Most Fertile?
Article from medical experts from our clinic
2022-05-25

When Are You Most Fertile?

If you are planning on expanding your family, the best time to try and conceive will be when you are optimally fertile. But when does this happen? When are you most fertile? 

We’ve provided some more information on this below so that you and your partner (if you have one) can check if you are ready to begin trying for a baby. Read on to learn more, or contact our private clinic today for a specialist consultation if you feel you will need help getting started on the journey to parenthood.

When Are You Most Fertile as a Woman?

This question can be answered in two different ways, depending on whether you are referring to a person’s age or their monthly menstrual cycle. In terms of the latter, women, or nonbinary or transgender people who were born female, will have their most fertile days near the middle-to-end of a particular cycle. These days are called the “fertile window” and will typically happen for around 4 to 5 days before a mature egg is released from one of their ovaries. This typically gives a total of around 6 days a month on which they are likely to get pregnant.

If you are referring to a person’s age, it is a well-known fact that age has an impact on a person’s fertility. For people born female, this means they are likely to be at their most fertile in their teenage years and their 20s. Every person born with ovaries is born with all the eggs they will ever have in their lifetime, and as they age the number of eggs they have will decrease. The health and quality of the eggs left over will also deteriorate during this time.

By the time a biologically female person has reached their mid-30s, this decline and deterioration of their egg cells will have become more rapid. This happens right up until they eventually reach menopause (at around the age of 50). After this time, they will no longer have a set of “most fertile days” when they can conceive, as they will no longer have a menstrual cycle. As a result, they will be unable to get pregnant naturally.

Age also has an extra impact on your ability to conceive if you are biologically female, as it increases the risk of developing health issues or conditions that can affect fertility. These include uterine fibroids (non-cancerous tumours) and endometriosis (the abnormal growth of uterine lining in areas such as the fallopian tubes). 

When Are You Most Fertile After Your Period?

Your most fertile days after a period are always the middle-to-end days of your menstrual cycle or those that lead up to the time of ovulation. This will normally happen around 12 to 14 days before your next period starts, though it may fluctuate depending on the nature of your cycle.

While you are unlikely to get pregnant after a period, there is a small chance that it may happen. Sperm cells can live for around 5 to 7 days in the female reproductive system, so if you have a shorter cycle and have unprotected sex in the days before ovulation, there is a chance that your body will release an egg while there is still sperm in your reproductive tract.

When Are You Most Fertile After Pregnancy?

A common misconception is that it is impossible to conceive for some time after pregnancy and after your baby is born. However, it is possible to get pregnant as little as 3 weeks after the birth of your baby ‒ even if you are breastfeeding and your cycle hasn't started up again. This is because there is a chance that your first ovulation cycle might happen before you get your first postpartum period, meaning that you can get pregnant without any sign of menstruation restarting.

When Are You Most Fertile on the Pill?

If you are correctly using oral contraceptives such as the combination pill, you are unlikely to get pregnant while taking them. When these pills, which contain both oestrogen and progesterone, are taken at the same time every day they are very effective at regulating your cycle. Both hormones help to prevent ovulation from taking place by sending signals to your brain that suggest you’ve already ovulated, and if there is no ovulation then it is rarely possible for you to get pregnant. The hormonal combination also helps to thicken cervical mucus, making it more difficult for sperm to travel through and into the uterus.

The effectiveness of the combination pill relies on:

  • Whether it is taken around the same time each day or not
  • Whether you have a medical condition that interferes with medication
  • Whether you are taking other medications or supplements that might be interfering with the Pill

If you do become pregnant while you are on the Pill, it is likely that one of the points we have mentioned above has played a part. To prevent pregnancy when you are not ready or do not wish to be pregnant, you should ensure that you are taking your combination pill on schedule at around the same time each day.

If you are taking a particular medication or supplement, or if you have a medical condition that may be preventing your birth control from working correctly, speak to your doctor or healthcare provider as soon as possible. They may be able to recommend alternatives that will not interfere when you are on the Pill.

When Are You Most Fertile as a Man?

While men (and nonbinary and transgender people who were born male) do not have a fertile window each month and can produce sperm and father children from the time of puberty onwards, there is still an age bracket in which they are most fertile. This is generally believed to be around the age of 30. 

As with egg cells, men’s sperm quality also deteriorates over time, and although the exact age this begins to happen hasn’t yet been pinpointed many experts suggest it starts around the age of 35 to 40. 

The deterioration of sperm is marked using the parameters the World Health Organisation (WHO) has set to determine healthy sperm. These parameters are the count (how many sperm there are in a sample of semen), the morphology (the shape of the sperm cells), and the motility (the sperm’s ability to move). As a person ages, each of these factors will decline and can contribute to male infertility, or issues related to male infertility.

Book a Fertility Assessment

If you know you are ready to expand your family but feel you may need some help along the way, or even if you are simply interested in improving your fertility awareness, GENNET City Fertility can help. We’ll be happy to offer you the chance to book a Male or Female Fertility Assessment as best suits your needs, and can even provide a Couples’ Initial Assessment Package if you intend to take this step forward hand-in-hand with your partner.

If treatment is recommended, you can also rest assured that you will never be offered processes or procedures that are not right for you. Every treatment we provide is tailored to the individual patient, giving them the exact care that they need and the best overall chance of success in their journey to parenthood.

Article from medical experts from our clinic

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