I took plan b, no period at all and I'm almost 3wks late on my period..could I b pregnant? I had unprotected sex with my husband 2 days before or after( can't really remember but I know it was that close) my period which was jan 9-jan15..I'm 22. Since takeing the pill iv had bad gas, acid reflex, and when I'm hungry my stomach gets very upset! I took a home preg.test feb12 it was negative..but still have no sign of my period at all, should I be worried?? Also I took plan b one step and it was about 1-2 hrs affter intercorse