Women are less likely to get pregnant when they have intercourse during the safe period, which means avoiding the ovulation day and the 4-5 days before and after the ovulation day. If the menstrual cycle is regular, the time before and after the 4-5 days in the middle of the menstrual cycle is the danger period, and as long as intercourse does not occur during this period, ovulation will not occur in the ovaries and will not easily lead to pregnancy. Women’s ovulation can also be affected by mental and psychological stress, and eggs may be expelled earlier or later, so relying only on the safe period for contraception is not accurate. If you don’t want to get pregnant or have children, it is best to use a penis condom or an IUD to prevent pregnancy, which is safer and has a higher success rate and will not have a negative impact on your body.