Idk What Going On

Kei`Ana
So I'm like always hungry. I eat a lot. I mean I'm still super skinny and fit cuz I work out but that's not the point. I'm currently hungry (as always). But there's an issue. Anytime I think abpit food I need to throw up. And if I think about eating anything it makes it worse. Idk why. This started last night. Does anyone know what this could be?