helpmeplease3

Let me first start off by saying ANY help would be appreciated. I’m 20 years old, 160 pounds and 6 feet tall. About two years ago my stomach was feeling terrible, I couldn't eat anything and I was always nauseous. I tried everything, the doctor thought it was acid reflux, however I demanded to be put on PrevPac for H-pylori. I felt better for a couple of months until the symptoms returned. Fast forward 2 years and I literally feel like dying and do not care to live anymore. The last year or so has been hell. I have to eat every 2 hours to avoid feeling shaky and weak. I never have energy to do anything and it feels like I'm always achy in my legs and arms. My tongue has been coated during this span, I've tried everything from probiotics, to herbs and nothing cleared it up thinking it was candida. It seems to get worse after eating meals. I would scrap my tongue, brush my teeth etc and it would return. I went to the doctor twice over the last year and got blood work done and she said everything was looking normal. I explained to her the symptoms and my depression due to the way I was feeling and she instantly put me on xanax thinking anxiety was creating these problems. I know my body and anxiety isn’t the problem, I believe my anxiety is coming from the way my body feels. Added to that many sleepless nights, and bowel movements that are pale and discolored, and unable to gain weight, I feel like I am wasting away. I used to be very active, but up until 18 I have not had the energy to do anything but sit and lay down. Which puzzles me because I cannot gain any weight at all. I have been researching and found some things that could be the problem. GI tract, hyperthyroid, autoimmune disease, hypoglycemia, some sort of parasite. Any questions to clarify things are welcomed. Thank you for taking your time.