I had expected to have my period yesterday morning, 02/18/2013, and lately my breasts been extremely sore and I been very nauseated all day for about a 1 week and a half. My breasts are not normally sore around my period at all. My last period was 01/22/2013 and I had sex on Feb. 1st and Feb. 5th and 6th. I don't know anything else that's wrong. I feel like I'm literally ON MY CYCLE cause I'm cramping, but no bleeding or anything, just irritable even more and cramping and back pains. Someone help me!! Is this normal if I am pregnant.