I am 18 days late on my very normal 28 day cycle and all my tests have been negative. I am getting my blood test tomorrow and don't want to get my hopes up at all, but I have been feeling nauseous everyday on and off all day. tonight after I ate dinner I not only got super nauseous but got sick. now my stomach is so uneasy...idk if it's my messed up hormones or pregnancy. Anyone else have this issue?