It is possible to get pregnant by internal ejaculation just after your period, but the probability of pregnancy is very low. Ovulation is usually the first 4 and last 5 days of the 14th day before the next menstrual period, during which sexual intercourse has a higher rate of conception, other than that the other times are called relatively safe periods. Meanwhile, the probability of conception is relatively low for women around the time of menstruation, when hormone levels are relatively low and the endometrium is in poor condition and normal ovulation does not occur. However, this situation only applies to women with very regular menstrual cycles. If a woman’s life is irregular, staying up late for a long time or having a disrupted menstrual cycle will lead to irregular ovulation, making it impossible to accurately calculate the safe period, and there is also the possibility of early ovulation, which may also lead to pregnancy when performing internal ejaculation. From the health point of view, it is better to have sex 3 days after the end of menstruation because the uterus needs some time to repair after the end of menstruation, and having intercourse immediately after the end of menstruation can easily cause damage to the uterus and lead to gynecological inflammation. Therefore, it is not recommended to have sex during or just after menstruation, and if you do not need to prepare for pregnancy, it is best to take good contraceptive measures.