Back at the end of September I took Plan B because my bf and I were giving each other head and some fluid could've made their way back in me but we weren't sure so The next morning I took Plan B. I had a post Plan B period that lasted 3 or 4 days and then the next month I had a regular period , I had 2 regular periods in those 2 months through December. Those lasted the normal 6 days for me, but now I am high concerned because I am 2 days late on my period right now and I am crazy worried about the possibility of being pregnant because the chances were low to begin with and I have no pregnancy symptoms at all aside from like headaches. I have no idea what is up with my body any more.