lack of hunger pangs, food not passing into stomach

About a week ago I started noticing that I couldn't burp normally. If I tried to force it, it felt like food was going to come back up. Then I ate a normal meal and the upper stomach felt bloated, I had nausea for several hours. I had to force myself to throw up to feel better. That was a week ago. Since then, I haven't had any hunger pangs. And anything I ate felt like they were stuck in the chest, throat. I tried to eat only soup (no solids) and water but they feel stuck the same, although not as bad as solid food. I saw the doctor and he felt my stomach, prescribed antacid and scheduled an endoscopy (in 1 week) There's no pain, just a slight pressure in the pit of the stomach. I've had 1 bowel movement since the symptoms started so I think the stuff I try to eat are trickling into the stomach.

tldr: Feeling full/bloated after eating small portions. Food feels like they're stuck in esophagus, not getting into stomach. Not feeling hunger pangs despite not eating.

Wait to see what your endoscopy shows. Maybe you have gastritis.