B.P.
I took the pill for while some time back and missed a period once. I was very good about taking it regularly and, at the time, not married so I had no need to think I was pregnant. When I called my OB/GYN office to ask about the missed period, they said it can happen on occasion when taking the pill. Probably nothing to worry about, but something to keep an eye on since pregnancy is a possibility for you.
Those times of not knowing and wondering are HORRIBLE, aren't they? Hang in there!!!
B.