Sorry for the me post. I am 5DPT and AF would not be due till Saturday. My body is out of whack with this flu but today I feel cranky, have a sore back, sore boobs, slight tummy pain and just now there was some blood when I went to the loo, I did my crinone and there was blood on it also. Could this be implantation bleed? If so how much bleeding would be normal? OR am I just kidding myself and for some reason AF has come early - really freaking out right now as I can't bear the thought of another failed cycle.