Okay, this q is for an acquaintance of mine. Please take it seriously, it isn't meant to be offensive or lewd. She is 16 and wishes to remain anonymous because her parents do not know she has been seeing a particular boy. So, they've been having sex, and she said that about a week after they last had sex (I don't think she was a a..flower), she went to bathroom and was bleeding, and there was a "blood clot-looking thing." The next day it stopped. It wasn't her period because it would have been 4 weeks early. Any ideas what happened, or if it's normal?