on the 7th day of my cycle (10/29/16) I had protected sex but the condom slipped off but I am not sure anything went in me, so the next day (8th day of cycle, 10/30/16) I took plan b one step about 16 hours later. I experienced many side effects. I usually have a 28-30 day cycle but I am never sure on when ovulation occurs so I took it just in case. Then on the 10th of November I started bleeding about a week and a half early. I also think this was around the time of ovulation but I am not sure since I took the pill. I have not had any other problems until a few days ago my breasts became sore around saturday, I also started cramping. I am not sure what this is because I never cramp before my period. and considering plan b restarted my cycle on the induced period and would be due to start around the 6th of December. I also noticed brown spotting earlier and I am freaking out since I know of implantation bleeding and cramping. please help