okay so i had unprotected a bunch of times the second week of March. I'm on the pill ( have been on the same one for almost 2 years now ) but during that week skipped a pill or two and even took some late. For the past two weeks i've been experience abdominal cramping, backaches, headaches, nausea, & i always seem to feel tired. I've took 3 home tests which came out negative, had blood work done last week which too came out to be negative. I was wondering if anyone out there is experiencing the same thing. My stomach has also seemed to be hard lately. I dont know what it is but for some reason i can't shake this feeling that i'm not pregnant. could i get some input.