Hi, thanks for the query to H.C.M.C.
So many doctors have advised you many tests like,
1. Stool examination.
5. Plain Xray abdomen.
Here I would like to say that it is presumed that all examinations are normal.
So why problems are there?
Two reasons are there ,
( hyper acidity)
2. Anxiety neurosis
( extra workload, study, carrier etc)
Still one more reason excessive engulfing of food.
Lack of any exercise ( Physical work).
Reasons of your's disease you know very well than take treatment accordingly.
For I B S rifixim and mebeverine
are the drugs but you have to take these at the advice of some doctor.
Have a good luck. Dr. HET