Last week, friday to be exact I had unprotected sex and he finished inside. i’m not on birth control and was on my last days of my period, my ovulation was supposed to begin on monday. i took a plan b on saturday and got sick tuesday-thursday with vomiting and diarrhea. on thursday, i began bleeding as if i got my period again, and haven’t stopped. it’s not as heavy as a period but won’t stop… should i see a dr or is this normal?