Had all of your same symptoms. I thought I was alone and crazy! had endoscopy w biopsy and endoscopy. have gastritis. no ulcers or hernia. everything else was fine. stopped the zantac. i belch, pain under left ribcage, depending on what i eat i have reflux, dizziness, palpitations (which is from the gas btw) the gastritis has caused malabsorbtion of nutrients in you bc of bacteria imbalance. hence why you feel weird, panicky, spaced out...etc. trust me i go to cognitive behavioral therapy bc i thought i was going crazy (regardless, its helping a lot to learn to deal with the anxiety from the gastritis, each sensation had me thinking i was dying and the docs were missing it somehow). some gastritis goes away on its own, some needs antibiotics and probiotics. my doc has me on 10 strain probiotics and also did a bunch of allergy testing on me and i found out im allergic to mustard, onion, rice, garlic, strawberries, chocolate, vanilla, black pepper, and tree nuts. i had no idea about any of them. i suggest you all get that done as well. otherwise, you're not dying. your gut is directly linked to your mind. thats why we all have the same symptom of anxiety. it will get better. eat bland! fish, chicken, potatoes, apples, oatmeal, bread. nothing cruciferous which are gas causing veggies. nothing deep fried. nothing acidic! my BIGGEST trigger is orange juice and tomato sauce and my worst attack hurt to even take a deep breath in and had to go to emergency room, they thought i had a blood clot in my lung....just had me endoscopy and colonoscopy last thursday...everything is fine just gastritis which causes all of these symptoms. you're all ok, deep breath. i realize all these processed foods we all eat are toxic. no more fast food!