Hi. I was having sex with my boyfriend on the 3rd day of my period. The condom split so the next day (about 9 hours later) we went and got plan b. After we I took it my period stopped which didn't seem normal as mine lasts about 7/8 days. About a week later I got my period again only lighter, darker and only lasted a few days. I'm due my period again this week but there is no sign. Could I be pregnant even though I had that mini period after plan b? Or should I take that mini one as my last period and expect my next one next week?