I think I know the answer to this question but I'd just like some reassurance - I've been on the BC forever (20 years). I've taken some "breaks" during that time and have never missed a period. Since May 1, 2007 until July 1st, I've really only taken about 5 weeks worth of BC. I had a hospital stay in May and they put me on major antibiotics so I never finished that month of pills (but it was just a few days). I had a regular period. I then had gallbladder surgery at the beginning of June...again, major antibiotics so I didn't even take pills that month because I knew the antibiotics would just "void" out the pill. Had a period in June and started new pack. Then first week in July, my husband decides he wants to "start making babies" so I stopped the pill mid-cycle and had a period July 13th....period was due again around August 10th. I've taken 4 pregnancy tests and they are all negative. I'm assuming my cycle is just confused with all that has been going on since May and I've really screwed things up by not being faithful to the BC......any other thoughts or should I be worried? My endo. said I could possibly have PCOS but like I said, when I went off the pill before I never missed. I've also gotten pregnant twice (once while on the pill and once while I screwed up by BC) but sadly I've also had two miscarriages so I'm anxious to get things moving along. I'm 36 and don't want to put this off any longer.