don't worry we wil care of your problem, in your age groups usually colitis
or mild hyper acidity
. Since it is not treated or a continuous repeat infection
leading to chronic shape by proper history, cross question, examination blood, urine, stool tests usg abdomen etc perfect diagnosis can be made. Your food habit, hygiene, bowel movements are important to be suggested. Stop tobacco, khaini etc if so.
Mean while anti spasmodics, antacids with dietary advise will give you relieve till diagnosis.