I had my last period on 5th nov. Next month i.e in december i didnt have periods. I took
pregnancy test from test kit but it was negative. So i thought that i will wait for the next month for my periods. But after my pregnancy test, i had an unprotected sexual intercourse with my boyfriend and i had to take unprotected 72 within 24 hours. Aftrr taking that medicine even within 1 week my periods have not occur. What should i do,??