Hello,
I went your history thoroughly and I understand that you have been using cannabis for the last 10 years. You also have pain abdomen +
back pain for several years (three).
You were a tobacco smoker and take coffee/soda plenty. You have irregular timings of diet habit. You had injured/broken feet for several times. You have taken much of NSAID for pain. You have done all investigations blood, urine, fecal, sonogram, and x-ray tests. No abnormality was found. The Drs have suggested a possibility of
stomach ulcer. After taking
Omeprazole you felt better.
All the above history leads to only one diagnosis, that may be a
Peptic Ulcer (ulcer at the junction of the stomach and
duodenum)
Scan usually reveals the outer surface of the hollow viscera. Peptic ulcers can be diagnosed only by Upper GI
Endoscopy.
You can visualize the problem and treat it accordingly.
More than that an alteration of your lifestyle is very important. Stop cannabis, Tobacco, Alcohol, Soda and untimely irregular spicy food.
This along with Omeprazole +
Antacid Gel + regular, frequent bland diet and a good sleep will help you. Avoid NSAID pain killers. You can try Serra peptidase like drugs for pain relief. If back pain persists do a MRI scan of spines (where pain is more)
More than drugs the cure is in your recovery from these bad habits
With all good wishes