Losing mind

Did anyone ever experience this? I am experiencing nausea food and smell aversion. I was due AF Saturday and i started bleeding Tuesday medium at heaviest. Today tapered off to light spotting. Nausea isn't going away or food adversions now i feel tired extra and my boobs are getting flatter because i can't eat. Is it possible i am pregnant or am i just having stomach issues and wishful thinking. I feel bulemic unintentionally