I took a plan b pill on April 19 and after that I got my period on May 2nd which was when I was supposed to get it, but when I was supposed to get my period for June I was 6 days late. Now for this month I am late again for my period. I always had very regular periods, I always track my cycle and I get my period every 30-32 days and it lasts for about a week. Could it be the plan b that messed up my cycle? Could I be pregnant? I always have protected sex but the last time I had sex which was a week ago my boyfriend and I did the withdrawal method.