Pregnancy can occur after childbirth without menstruation. Although you do not have your period at this time, you will still be ovulating, and because there is no fixed time for ovulation at this time, you will also be prone to pregnancy. You can take an early pregnancy test about 12 days after intercourse, using morning urine as much as possible for a higher accuracy rate. If you want to know if you are pregnant, you can go to the hospital for a blood test 8 days after intercourse, or you can take an oral emergency contraceptive pill if it has not been more than 72 hours since intercourse. If you are breastfeeding, you can suspend breastfeeding for 48 hours, and after 48 hours you can breastfeed normally. Also try to use contraceptive measures, such as condoms, when having intercourse in the future to avoid causing pregnancy and unnecessary damage to the uterus.