The best time to try and conceive is during the ‘fertile window’ of the menstrual cycle. The Fertile Window are the days in a woman’s menstrual cycle when pregnancy is possible. These six days of the ‘fertile window’ in a woman’s menstrual cycle reflect the lifespan of sperm (5 days) and the lifespan of the ovum (24 hours).
Here is a chart we have developed to understand the fertile window:
- If a woman has sex six or more days before she ovulates, the chance that she will get pregnant is virtually zero. If she has sex five days before she ovulates, the probability of pregnancy is about 10%.
- The probability of pregnancy increases steadily until the two days before and including the day of ovulation.
- At the end of the ‘fertile window’, the probability of pregnancy declines rapidly and by 12-24 hours after a woman ovulates, she is no longer able to get pregnant during that cycle.
- For those women who are not aware of their ‘fertile window’ or when they ovulate, sexual intercourse is recommended every 2 to 3 days to help optimize their chance of getting pregnant.
- The likelihood of actually becoming pregnant is dramatically increased if you have intercourse in the three days leading up to and including ovulation. If a woman has sex on any of these three days, she has a 27-33% chance of becoming pregnant.
Now that you know when you’re most fertile days, you can make use of our ovulation calculator and figure out what you need to do to boost your chances of conceiving!