It's always better to combat something on its onset, rather than thinking it's something common or bearable.
You should also see for the time being, what you're eating and correlate with some of your symptoms (if there is concern about food intolerances ).I have found that parasites, along with Heavy Metals make one not handle well all kinds of foods.But when one overcomes the infection and the heavy metal burden, then one is able again to properly digest and eliminate food.
Make the trial and error with food.For some days avoid milk,later on avoid coffee, beans, lentils, cereals in rotation.Avoid SUGAR, since it's a bug feeder.Try to test your alcohol limits also.
Avoid eating out.Avoid pork and black pepper.Fried foods are also a NO NO.
Don't eat a food that has been prepared 3 days ago.Avoid also drinking cold beverages all the time.These weaken your stomach.