GERD/HEARTBURN after antibiotics???

Hello all! I just made this account today! I am desperate for help!
I have a history of colds and sickness, I need to get my tonsils out, but I think this is one of the worst things I experienced. A month ago I got sick. My ears were clogged and my sinuses were draining. I did a week of antibiotics. After that my body felt weird and I began to wake up in a cold sweat, a lot of anxiety and chest pain and stomach pain. After that my ears still did not unclog. So I went to the Ent, I got put on amoxicillin and cortisone? For my ears. In a few days they unclogged thank god! But after that I had a constant chest pain. I had gone to the hospital and ran an EKG and did blood work. Everything came back normal. Doctor suggested it was just muscle pain. I now came to the conclusion that the pain in my chest gets worse as I eat. I stopped the antibiotics and decided to heal it on my own with water and soup eggs, yogurt, tea, and anything plain. Which only started to set my stomach on fire. It's gotten so bad that I now get migraines and my left side begins to tremble during attacks. I assume anxiety. I got omeprazole, gaviscon, Tums and even baking soda doesn't work, from the doctor and it is only my second day of using it. Twice a day, morning and night. I only eat soup, eggs and not even yogurt (plain) because that hurts. The pain in my stomach has gone but my chest pains, quite terrible and all over my chest, arms, back and jaw at times, and the migraines will not leave. I never had heartburn before but I should mention that when I was younger my stomach couldn't handle a lot and would vomit quite often. I don't know what to do the pain drives me crazy and I end up staying inside and not being able to partake in activities with friends. I'm 22 I'm 5'6 and I am over weight but I've always watched my health and exercised heavily. My father deals with stomach issues but for the most part not as intensely as myself. Has anyone experienced this and is there an actual cure? Will the omeprazole help? Maybe yoga will help? The chest pain feels terrible. I cannot live like this. As well I am in France until the end of this month so specialist doctors may be hard. I'm so sorry for anyone who goes through this on a daily basis. Because these chest pains almost feel like a heart attack!!!!