I have trying to get pregnant for a while now, but unsuccessful. Now for about a week maybe two i ve been, crampy, dizzy, very tired, my breast feel full, upset belly, hungrier than usual (not tonight though, no real appetite) ive taken four dollar store pregnancy tests, all positive. Took two clear blue digital, both negative. And one test given at a place named A Womans place that was negative also. My last cycle was may 18-21 are these pregnancy symptoms?