Hi. I am five days late for my period. It is normally on time, but occasionally is not regular. I have been using protection (condoms) with my partner and nothing has broken or slipped recently. In late December we had a slip and I took Plan B just in case right after and got my period about a week afterwards, so I know I am not pregnant. About two weeks ago , I had light brown spotting that lasted for a week, which has never happened to me before. I have read that sometimes that means implantation bleeding, but it can also be a part of ovulation. I am worried that I may be pregnant because I am late, but since there has not been any problems with the condoms, I don't know what to think. I know condoms are generally very effective and safe when used properly, but there is always a chance of failure. Am I just being overly paranoid? Could it just be the stress of worrying that I may be pregnant, as well as other life stresses (college, ballet, etc)? Did Plan B just mess up my hormones?