Hello. I am on YAZ and on February 20th my boyfriend and I had sex w/o a condom. I know he did not ejaculate inside of me, but I still worried about pre-ejaculation. I took my last pink pill the following Monday. The next day, Tuesday, I had cramps like I was having a period, but only had dark brown discharge. I still panicked, so I bought plan b and took it within 120 hrs after intercourse. I felt funny after taking plan b, like my muscles were stretched very tightly. Two days later the brown discharge starts to contain blood and I think ok, then I must be having my period, so I start my new pack of YAZ. A week goes by and during that week, I take 3 hpt and all are negative. Now, 2 days ago,( 17 days after intercourse, 12 days after taking plan b) I experienced abdominal pain like cramping. I went to the bathroom, and when I wiped there was bright red blood. It only lasted for a few minutes and then it was like it was never there. That happened again that evening, twice yesterday and again this morning. Is this my period? What is this? Did the plan b mess up my cycle? I took another hpt yesterday morning ( first pee) and it's negative. What's going on with my body? Please, help. I am very worried. Thank you.