Curious would like opinion please.

Ok ladies I'm new to Glow and it said I would start last sat. Well I didn't and I took to preg test both came back neg. I'm now a week late according to glow, and not feeling so great. Upset stomach and very lose and watery stools. I've also had sore breast. I am going to take another test soon but in case it comes back neg, anyone else have something similar then get a pos  test?