If I were you I would visit gastroenterologist or any other specialist aside psychiatrist . Why am I saying this?

Well for different reasons (overeating mostly) I was having this persistent nausea. I could only eat very small amounts of certain foods. I got nauseated even by water. So it turns out that I did have some stomach problems that caused this. Gradually with pills and treatment now I'm able to eat most foods.

So please don't give up and don't hate yourself! Quite the contrary. Think about what you like in yourself and love yourself because this is how you start. I'm sure that it's hard, but just think about the things you like in yourself. Concentrate about them.

And really check this stomach issue because you might have some problems there that make you feel this way.

I hope that everything works out!