Having sex during ovulation can effectively prevent pregnancy. This is a proven fact that is very important for couples who want to have children. So, what is ovulation? Let's take a look.

Generally speaking, a woman's menstrual cycle lasts 28 days, but some women have long or short menstrual cycles, or some women have early or late menstrual cycles. After a woman's egg is released, it can only survive for about 1-2 days, while sperm can survive in a woman's body for about 3-5 days. Therefore, in a woman’s menstrual cycle, the 14th day is generally the ovulation period, which is when women are most likely to become pregnant.

Having sex during ovulation ensures that sperm and egg meet, increasing the likelihood of pregnancy. To maximize your chances of getting pregnant, it is recommended to start having sex on day 14 of a woman's menstrual cycle. This is because this day is the date when the egg is released, and it is also the date when the sperm enters the woman.

In addition to ovulation, there are other ways to predict a woman's safe periods and improve her chances of getting pregnant. These methods include:

1. Use Contraceptive Devices: Contraceptive devices can minimize the possibility of pregnancy.

2. Use emergency contraception: If you are pregnant but still want to have a baby, emergency contraception can help.

3. Understand a woman’s menstrual cycle: Understanding a woman’s menstrual cycle can help predict their safe periods and avoid having sex on unsafe dates.

To sum up, having sex during ovulation can effectively prevent pregnancy. Therefore, it is a very important decision for those couples who want to have children. If you have any concerns or questions, it is recommended to consult a doctor or professional advisor.