I had sex September 9 unprotected. He never came in me because we didn't finish having sex. I understand you could get pregnant from pre-cum yeah yeah yeah. Today I was suppose to get my period but all I keep getting is light brown discharge mixed with a little creamy white discharge. I feel a little crampy and only one boob and one nipple hurt. I also had this happen when I took plan B last month. I don't know what this is, help?