morning sickness :/

So I'm 100% I'm not pregnant since I've never had sex. I'm thinking it is anxiety but I'm not sure. I've been having a lot of family problems and I'm in school right now so I'm stressed pretty often. My problem is every morning I wake up and get his horrible throwing up feeling and my stomach hurts. I throw up some mornings but others I don't. It makes me sick to stretch in the morning and I feel a tightness in my chest sometimes. I always have sweaty hands and I feel cold and get chilly a lot in the morning. I also have always been one to sleep in but now I wake up sick every morning at around 7 and can't go back to sleep. This has made me constantly exhausted and upset and I'm not sure what to do or what it is.