My cycle is pretty regular, coming every 25 days. My last period was on 01/08/2011. It was due on 02/02/2011. So far, no show. I have taken 3 different pregnancy tests that all came back negative. I have been having cramps that feel like a period is coming, a little bit of crankiness, but nothing. Any ideas as to what could be going on? I am never late.