Hi, Me and my boyfriend had sex at the middle of may. The next morning I went and got the plan B pill. A few days later I had brown spotting for about 3 days. I started my period on time in june but then a week later I had another period with brown clots. It lasted 4 days and then 11 days later I started having my period with brown clots again. I wasn't supposed to have my period until the 15th of this month but it started on the 3rd and and I am still on it. I don't know why this could be happening. I have taken the plan B pill before and nothing like this has happened.