Change your diet, add probiotics, and maybe even a digestive enzyme.
I have the same thing too! This fullness/tightness in my upper abdomen. Not really sure what it is. I'm on Dexilant now. Prior to this, I was on Pepcid and Zantac. Both didn't help with this feeling.
Sometimes, I feel like a choking sensation in my throat. Just had an upper endoscopy done 2 days ago, my dr. mentioned only mild gastritis.
maybe try pepcid. each acid reducer acts differently. you just have to find the one that works for you.
It sounds to me like the lining of your stomach is damaged (gastritis). And you made the #1 mistake, you started feeling better and stopped taking the meds. More often than not you would be on omerprazole at least a month, just because you start feeling better doesnt mean you are better, it means you are STARTING to heal.
Another thing to do is to not eat or drink things that irritate the stomach. Thigns like dairy, gluten, coffee, tea, tomato, garlic, onions, greasy foods, fatty foods. Avoid these and Im sure you will feel better.