Today is November 7, 2015.. I had unprotected sex with my BF three days ago. The morning after I was cramping really badly and the day after that I started something to what looks like my period.. Today is the second day of this "cycle" and I have been cramping like crazy. This cramping is unusual for me because I DONT cramp on my periods.. My back and stomach have been really painfully sore since the 5th and my legs hurt sometimes too.. I have been exhausted lately. I went into the Doctors and the pregnancy test was negative.. Did I test too soon? Could I be pregnant?