It is easy to get pregnant when you have sex during ovulation. In women with regular menstrual periods, ovulation occurs about 14 days before the next menstrual period, and 5 days before and 4 days after the day of ovulation. During this period, the vaginal discharge increases and can be watery and transparent, so if you have sex at this time, you have a better chance of getting pregnant. For those who have irregular menstruation and cannot determine their ovulation period by calculating the date, they can take the basal body temperature, i.e., hold the thermometer under the tongue every morning, and if the basal body temperature rises by 0.3℃-0.5℃, it indicates ovulation. In addition, you should go to the hospital for ultrasound and hormone level measurement before planning pregnancy. If the female partner has ovarian or fallopian tube diseases, such as polycystic ovaries or tubal adhesions, or the male partner has weak spermatozoa, they can affect conception. During the preparation period, it is important to pay attention to regular life, relaxation, rest and avoid overwork, do not have a lot of psychological pressure, both spouses should stop smoking and drinking, and take folic acid to prevent fetal neural tube malformation. If a woman has delayed menstruation for more than 10 days, she should go to the hospital to determine whether she is pregnant.