will cause Gastric irritation.So,it may the cause of all your complaints of pain abdomen.
Nice to hear that CT scan,Ultrasound
abdomen are normal.
You didn't mention whether Upper GI endoscopy was done or not.
Any mass in the abdomen will be seen in the CT scan and Ultrasound abdomen.
As you got temporary relief with proton pump
is the most probable diagnosis.
Please consult your Gastroenterologist and take appropriate treatment