I was diagnosed with gastritis 1 month ago. I am a little better but it does not go away.

I went to the doctor because of some upper abdominal pain I had. She said it was due to gastritis and I been taking omeprazone so far. I am an active person and during hose 3 weeks I been eating as healthy as possible. Avoiding any irritants that could upset my stomach. I been progressively but slowly getting better. I still have some of the pains although they are not as bad as before but I tried running the other day and I did have some pains as if gas was trapped in my intestines and did hurt and kept me for running. I also have mild pains during the nights. They last for like 5 min and usually have them when I am sitting down or laying down.

the pains are not really intense but they sometimes do get uncomfortable. I am already going to the gastroenterologist to get rid of this.

I am just nervous because I never get sickness that is not the cold flu. I heard that those pains can be from gallblader stones. I am just afraid I would need surgery or something like that. The doctors have already did a urine Test and blood test (Comprehensive Metabolic panel) to check my kidneys liver pancreas too see if I had high enzymes count on my blood. It came completely Negative/Normal

. Is there any chance I will need surgery?