I ve had unprotected sex 4 times and I ve taken plan b 4 times in about a month and a week. Each time I made sure to take it within 48-60 hours. He always pulled out but I ve read that you can get pregnant from precum so I took the plan b. Now I m worried that I m pregnant because I started bleeding on May 11th when my period usually comes on the 20th or 23rd of each month. I dont know if its my period or if I m spotting or if I m having implantation bleeding. I ve read that spotting is light and it should not fill up a pad...mine is the opposite. I had an extremely heavy bleeding on the 12th of May, and on May 13th I wore tampons all day, and before I went to bed I put on a pad . But this morning (May 14th) I woke up with a clean pad, no blood, however later this evening the bleeding is back and I just started cramping out of nowhere (while I m writing this). I haven t had cramps in months.. could this be from taking the pill too much or am I pregnant. should I take a pregnancy test? if so when should I take it to give me the most accuracy.