Recurring digestion problems. Occurs.

Over an year i had been affected food poisoning , At that time i had frequent indigestion problems , nausea and heart burns and i took proper medical treatment from an Gastrology doctor. then somehow i am recovered , then this indigestion problem occurs once in a while . whenever i am taking certain foods indigestion and other problems occurs . Three months back I took one Endoscooy and the doctor said some bacterial infections caused dyspepsia . then after some medications i was well and good. Now from last week am experiencing same indigestion problems . i had stopped having milk and only taking curd- like products.. I had done some online search and i am guessing i have Irritable bowel syndrome . ... Is it so .