My body is rejecting food

I posted earlier about having no appetite but having hunger pains and feeling weird and someone told me to just eat. So I just ate, it was disgusting and tasted awful and the smell of it burned my nose and then I threw it up, all of it. I don’t feel nauseas now. I never felt nauseas until I forced myself to eat.

I feel so confused, does this seem like a stomach bug? I don’t have any other symptoms other than puking if I eat and feeling weird... like I’m tingly when I don’t.

I’m running on low fuel I can’t even tell If I sound stupid

pregnancy has crossed my mind. Don’t know if this sounds like pregnancy though, and I have the IUD.