Hi. I'm new here. I am 3 days late from my period. My period is extremely regular always and only ever is a day or so early if any. I have took 2/3 tests and all are coming back negative instantly. I have cramp just like usual menstrual cramp that I've always got. There is absolutely no sign of any blood though. I've had sex to try bring it on like it can do and nothing. What is going on!! X