needs further evaluation
Thanks for writing to health care magic.
I think gastritis
could be present but pain should have shown dome improvement in these three days.
If the pain is persistent the following possibilities should be considered.
a) Worm infestation.
b) Mesentric adenitis
c) hiatus hernia
which is a complication of gastritis.
I would advice you to get ultrasound
abdomen to rule out majority of other problems.
In simple gastritis ultrasound will be normal.
That should be the initial workup I suppose.
dose can be done Upto 15 ml thrice daily to see if it helps.
Wishing him good health