Abdominal dull pain in empty stomach.

Hi, In Feb I took some NSAIDs for 15 days morning and evening. And i had some acidity as well. I started getting pain in upper abdomen just after food, went to Fortis and doc told no major issues and prescribed rezo 20 and vsl#3. After 15 days i was ok .. And doc asked to loose weight so i started intensive exercise. But sometimes i used to feel burning sensation in empty stomach, used to take water and it used to be fine. After 1 month got throat irritation, one dr prescribed antibiotics and signoflam for 7 days again i noticed dull pain. And later consulted ENT specialist they asked me to take only antacid. I consulted fortis again, sr doc told it doesn't seem to be major issue and gave Eomac 40 for both time for 15 days. Sometimes i feel better sometimes i feel same problem if i get late in taking medicine i think. I am really scared it's been 3 months i want to get rid of it. Please suggest me. My stool looks fine, i feel hunger, but my stress is high due to this. I am scared.