I think I have stomach cancer

Today is June 30, Wednesday. I’ve been feeling nauseous and dizzy and shortness of breath every time I walk. I’ve been feeling full and not hungry whatsoever which is weird because I love to eat and will always eat whenever offered food. I feel like I want to throw up since Monday and have been feeling the same symptoms since Monday. My mom has given me medicine for stomachaches and stuff and nothing seems to work. I feel horribly ill and my eyes also hurt. My breath has gotten worse as well. Maybe because I would always use listerine breath sprays and would sometimes consume the small amount left in my mouth! I booked a doctors appointment but they said I can’t go until next tuesday :( Please someone help what do I do