Upper Middle Abdomen pain. Eat outside?

Hello Doctor, I have this problem of mild to moderate pain and discomfort in the middle of upper abdomenal area (at the pit of the stomach, just below where the middle bone of rib cage ends). It comes and goes throughout the day. Generally I have noticed that it happens when I'm traveling outside the city, may be because of food that I eat outside? The pain varies from mild to moderate and it doesn't seem to be as a result of gas formation too as I do not fart or not burp for the pain to subside. I'm a moderate drinker, my drinking patterns are once a week or once in a fortnight. Request your observation on the same. I'm not very fond of spicy food and keep a gap of min an hour between the meals and drinking water. My body type is average with mild workout. Thanks.