It’s not just about having lots of sex. You can have sex 100 times a day, but if it is outside your fertility window, it’s nothing but a recreational activity. While the average man is fertile every day of his post-puberty life, a woman only has a limited period every cycle. Of course, there are some exceptions to this rule, and some women have even conceived whilst on their period. I still struggle to understand how that cycle would work. Anyway, for majority of women, with an average 28 day cycle, ovulation typically occurs around day 14. Typically…not definitely. And the egg’s lifespan is about 12 to 24 hours. Sperm, on the other hand, can survive for up to 48 hours in the vagina or uterus, so the most fertile time is from two days before (day 12) to two days after (day 16). The least likely period to get pregnant is from day 1 to day 7. For women with cycles shorter or longer than 28 days, the important thing to note is that ovulation typically occurs about 14 days before the next period starts.
Thus, for conception, it is important to have sex more than once around the time of ovulation. The best way is to have sex 1 to 2 days before ovulation, and again on the day you ovulate. This will ensure that there will be good supply of sperm waiting in the fallopian tube when the egg is released.