My boyfriend and I had unprotected sex on June 27th we couldn't get Plan B right away but we got it on Sunday which is June 29th. I was fine for the first week no pain or anything then the second week I started bleeding but it was lighter than my period would normally be. It ended in 5 days then a few days later I started have sore breasts and my back was hurting a lot, and then I started having this brownish discharge. and I was just wondering if the plan b worked or not... please answer, I'm obviously freaking out