Having intercourse on the 5th day of your period is usually not a good way to get pregnant, but there is still a small chance that you could get pregnant. It is not recommended to have intercourse during menstruation, but if you do, you need to use proper contraception. For women with regular menstrual cycles of 28 days, their menstrual period is calculated according to 3-7 days, ovulation is generally 14 days before the next menstrual period, then about 1 week after the end of menstruation is the ovulation period, before and after the ovulation period of 2-3 days are susceptible to pregnancy, and the fifth day of menstruation is not in this range, so it is difficult to get pregnant at this time. For women with longer menstrual cycles, for example, a cycle of about 35-40 days, ovulation will be delayed accordingly, and the 5th day of menstruation is farther away from ovulation, so the probability of pregnancy is also lower. However, because a woman’s ovulation is affected by many factors, such as environmental factors, personal psychological factors and endocrine factors, the specific time of ovulation will change due to the above factors, which may be advanced or delayed, or even the case of extra ovulation, therefore, coitus on the 5th day of menstruation is still possible, there is a possibility of ovulation, and there is also a chance of pregnancy. In addition, it should be noted that even though the probability of pregnancy on the 5th day of menstruation is small, but it is not recommended to have intercourse at this time. Because, at this time, most people’s menstruation has not completely ended, coitus will increase the possibility of infection, resulting in pelvic inflammatory disease, endometriosis and other diseases to increase the risk of occurrence. If you have already had intercourse, it is recommended that women clean themselves well in time and seek immediate medical attention if they experience discomfort.