going crazy

My af is due tomorrow I've tested a couple of times over last 2 weeks (I'm so impatient) some times I'm sure it's negative sometimes I'm convinced I can see something but the thing that is confusing me is the feeling that I want to throw up all the time I don't feel Ill just feel like I want to be sick surely if I have enough hormone to make me feel sick I would have enough to show up on a test