I’m really nervous…

I have an endoscopy tomorrow morning and I’m honestly really nervous as to what they are going to find… I’ve lost over 30lbs+ in the last 3-4 weeks due to puking up every food that goes into me, a single tiny bite of something included. The only thing I can seem to barely keep down are my psych meds and water, absolutely nothing else, not even broth now. I’m just so scared because my GI doctor says it’s either Gastroparesis, or a stomach disorder (which I can’t think the name of) that causes my stomach to not be able to digest anything. I’m just so tired of this… I just want to be healthy again…