Around 12:30 this afternoon i started getting these quick, sharp, stabbing pains in my uterus. My right breast would itch and hurt as if im about to have my cycle, but it stops after about 30 seconds. I also became extremely exhausted and experiencing headaches on and off. According to this app i am 2 weeks 6 days pregnant as of today. My fiancée told me not to get my hopes up because we've been through this before and the tests have always been negative. Idk what to think or do. What do you guys think it could be?