Talk to Gastroenterologist on Excessive Vomiting

I’ve been experiencing slight Upper abdominal pain and I’ve been vomiting everything I eat idk why I have no gotten better I’ve been to three doctors and my lft, h.pylori, and cbc reports are perfectly fine. Appetite is very low and sometimes I vomit after eating sometimes I don’t but the days I do vomit it happens 2-3 times. I have tried different medicines nothing is working please tell me what the problem could be and what should I do (home remedies would be much appreciated)