I got my period on 8/6 it ended 8/10 I had sexual intercourse on 8/11 and took the plan b pill on 8/13 I started spotting on 8/19 and today 8/20 and I’m still spotting with mild cramps my period is a length of 5 days and my cycle varies from 27 to sometimes 28 days I’m 25 with normal regular periods and had a previous normal Pap smear so what could be wrong?