About 3months ago I went to stay at a friends, but got too nervous and threw up so I left. Ever since then I ve felt sick, on and off. And whenever I m put in situations that make me nervous I feel sick, and i get very close to throwing up. It s now getting to the point where I struggle to eat everyday and constantly feel sick, so I can only nibble on small things, but never eat big meals. What s going on?