I'm just a lurker but I was wondering if anyone else has had this happen to them before... I was on yasmin for over a year and I just switched to Loestrin Fe, which I have been on before and I haven't gotten a period. I have never missed a period on any of the BCPs I have been on (including Loestrin) but I am on my third pack of Loestrin and have not had AF yet. I took a pregnancy test both times I missed AF just to be sure I wasn't KU, and I'm not. I know that you can miss a period once in awhile, but more than one in a row? Would you be concerned?