I've been having unprotected sex on and off since April 5th, I've taken plan b 3 time before which have seen to work just fine, in the month of may I had my period on may 4 and then again ten days after on may 15 because it messed up my cycle. Now I had sex towards the end of the month of may again , unprotected and took plan b once again within the hour after. I haven't gotten my period since and I'm worried because every other time I had gotten my period withing days of taking plan b, I've been bloated, and had cramps almost every day but am I pregnant!?