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The Best Day To Get Pregnant

To know the best day to get pregnant, you must have a deep understanding of your menstrual cycle.

In this article, we’ll discuss how to know when you’re most fertile, the best days to have sex, a deep dive into the menstrual cycle stages, and the best ages to get pregnant.

How To Calculate The Best Day To Get Pregnant

Best Time To Get Pregnant Chart

Chances of pregnancy increase nearer to ovulation, but depend on many factors

The Fertility Window

The first thing to note is that you can only get pregnant during your fertility window.

Your fertile window includes your ovulation day and five days before ovulation.

Your fertility window depends solely on the length of your menstrual cycle. To calculate the best day to get pregnant, you have to be very sure of your menstrual cycle. 

How To Calculate Your Ovulation Day

For this example we are going to assume your menstrual cycle is 28 days.

To calculate your ovulation day, start counting from day one of your period. Then track the 14th day; this would be your ovulation day.

You can download a period tracker app on your smartphone from the Android or iOS play store. But, keep in mind, calendars are not 100% accurate. After all, menstrual cycles do change.

If you really want accurate data, then your best bet is to get an ovulation predictor kit. And it’s also recommended to chart your basal body temperature and check the slipperiness of your cervical mucus.  

The Best Day To Get Pregnant During Your Fertility Window

You can try having sex five to three days before your ovulation day. Spermatozoon have the ability to live up to five days in the Fallopian tube of a woman.

But it’s recommended to start, at most, three days before your ovulation day. This is because pregnancy chances tend to be higher than if you started five days before ovulation.

On ovulation day itself, you have a 24 hour window to try to fertilize your egg. If you miss that time, you may have to try again during your next ovulation day.  

The Best Time To Have Sex To Get Pregnant

Most women tend to ovulate in the evening, while a man’s testosterone levels peak between 6am to 9am.

So, it may be more efficient to stick with early morning and late evening sex when trying to conceive.

What Is The Best Age To Get Pregnant?

A woman’s fertility decreases with age and will eventually stop when menopause sets in.

The peak of a woman’s fertility is in her twenties. And fertility decreases once you reach 30. But this can change with lifestyle changes.

Between 31-35 years, the chance of spontaneous conception declines by 3% per year. After 35, the rate of decrease accelerates.

As a woman ages, the viable eggs she’s got decreases. This leaves the remaining eggs to be prone to genetic anomalies. By 45, she may have little to no chance at conception. 

As for the man, semen quality may also decline with age. Again, lifestyle changes may improve semen quality.

Ideally, it’s recommended to try to get pregnant when you’re both in your twenties. But, if you’re both past that age then be sure to read the other articles on this website to increase your chances of getting pregnant.

Mastering The Menstrual Cycle

Understanding your menstrual cycle can help you develop a closer connection with your fertility window. Plus, you may instinctively begin to know the best days to get pregnant.

Now, there are four phases in the menstrual cycle. They are:

  1. Menstruation
  2. The Follicular Phase
  3. Ovulation
  4. The Luteal Phase

The average length of a woman’s menstrual cycle is 28-30 days. But it differs for all women, and cycles may change.


Menstruation marks the beginning of the menstrual cycle. And it is the elimination of the endometrium of the uterus after failure to implant or fertilize an egg.

The Follicular Phase

During the Follicular phase, follicle-stimulating hormone (FSH) is produced. This stimulates the production of tiny follicles on the surface of the ovary.

Inside each follicle, you have an egg. But only one matured follicle will be needed. Therefore, the others will wither. For someone with a 28-days cycle, this should be happening on the 10th day.

During the Follicular phase, luteinizing hormone (LH) is produced due to the rise in estrogen levels. This stimulates ovulation.


Ovulation is the release of a matured egg from the surface of an ovary. This occurs four days after the matured follicle (now an egg) is ready.

Ovulation happens mid-cycle, around two weeks before the next menstruation. For a 28-day cycle, ovulation is on the 14th day.

If the egg is not fertilized within 24 hours, it will die.

The Luteal Phase

Remember, the egg comes out of a follicle. After it leaves, the ruptured follicle on the ovary’s surface transforms into the corpus luteum for another 12-14 days. This begins the Luteal phase.

The corpus luteum releases progesterone to thicken the endometrium of the uterus. This is in preparation for implantation of a fertilized egg.

When fertilization does not occur during ovulation, the corpus luteum withers and sheds with the endometrium. This comes out as menstruation. And so, the cycle repeats.