Food kinda repulses me, what are some good things to eat to help?

I have a protein shake with oats in it every morning so that keeps me going for a while, but after I have it I feel some nausea.

I know I need to keep eating protein and meat but the thought of it repulses me.

Scared I’m going to start losing weight or something.

I’m only 5 and a half weeks. How long does this go on for?