I'm 2 days late on my period. I was supposed to start on the 9th. I had sex on February 28th and March 3rd. Both times with condom but think it could have broke on the 28th.. No plan B used. Feb 28 I was "low fertile rate". My cycle is usually 28 days. I'm on day 31 of my cycle. I've been having slight cramps, little back aches and muscle aches. Any thoughts on if I could be pregnate In The future?