You can also get pregnant if you have sex three days after your period. If a woman’s menstrual cycle is normal, she will usually ovulate 14 days before her next menstrual period, which is called the “ovulation period”, and it is easier to conceive if you have intercourse five days before and four days after the ovulation period. The likelihood of conception at other times is relatively low. However, it is not absolutely safe to have intercourse outside of the seven days before and after ovulation. Due to the differences in women’s menstrual cycles, coupled with the fact that ovarian ovulation is susceptible to environmental, emotional and other factors, a woman’s ovulation may also occur a certain amount of time in advance or staggered. Therefore, although three days after the menstrual period is not in the period when women are susceptible to conception and the chances of getting pregnant by intercourse are relatively low compared to those before and after the normal ovulation period, there is still a possibility of getting pregnant due to the possible change of the ovulation period. Women who do not have the need to prepare for pregnancy should always use contraception when having intercourse to avoid the harm that an unwanted pregnancy can cause to the body.