On the day of ovulation, if you had sexual intercourse and then took emergency contraception, your menstruation has continued.

Patient's question:

Medical history: Has a history of medication-induced abortion.
Follow-up question: I took the contraceptive pill about six hours later. Will it be ineffective if I got pregnant immediately? How many days is considered normal for a delay?

Doctor's answer:

Hello: Since you have taken emergency contraception, the possibility of pregnancy is naturally very small. The delay in menstruation is related to the contraceptive pill, so there is no need to be overly anxious.