I had my period on September the 2nd, I had sex on the last day of my period Friday the 6th unprotected. It is now the 22 and I am having "cramping" in my uterus and my breasts and tender. Sometimes before my period I will get tender breasts but usually not this early. I figure I am 2 weeks out till my next period is due. I also sometimes get cramping a day or 2 before I start but again not usually this early. I'm concerned I may be pregnant or there might be something else wrong. Suggestions?