A suggestion...if you are doing this on bc pills perhaps you need to change the kind you are on. I am NOT a doctor but I do think you should call you GYNs office and tell them what is going on. Is this just minor breakthrough bleeding or the full blown thing? Period irregularities do sometimes go with this diet at times but if your being chemicaly regulated with pills, I would report it to my doc. Sometimes it's as simple as changing brands of pills. I wouldn't worry about the extra weight..it must be water retention if you haven't cheated a LOT. Good luck.