Digestion problem. I do please help!

Doctor, I get burps even if I'm drinking water, or eating any small food or anything. All this is happening since a month. I'd get stools daily but 2-3 times or someday constipation. Sometimes a lil cramp at right upper side of abdomen. Idk if it's muscle stretch or strain or what since I was going to gym too for weight loss. I checked my ultrasound it had fatty liver changes grade 1-2 rest was normal, to confirm this I went for fibroscan it showed no fatty liver CAP value was 174 kpa 3.3..I was experiencing hairfall last month more so I tested for my iron, b12 were borderline low. I took iron and b12 supplements and tested after a month, b12 and iron didn't increase. Now my b12 is 155, iron 43 and hb 11.5... I visited my nearby gastroenterologist he just gave me esomeprazole and domperidone tablets, psyllium husk and i dont know why why he gave anti depressant. And started b12 injections. He also checked for celiac disease, the report was negative. What should I do please help