Hi! I have been on birth control for 5years and have never experienced these types of cramps. My period started on Sept 26th and ended on Oct 1st. My boyfriend and I had sex on Oct 1st, Oct 3rd, and Oct 5th. On Oct 6th, I started getting dull cramps that have lasted until today Oct 12th. It can't be pregnancy because this would have been the "ovulation time". I was on a Zpack for the flu Oct 1st - Oct 4th. Could this have messed with my birth control? Why would these cramps be a result if so? Or could I have a cyst of some sort?