What Do Recurring Infection In Stomach And Diarrhea Suggest?

Hello Doc, last Friday I had egg and after that I got stomach infection and from last three days my stomach is upset. Even having watery motion after drinking water it is not staying in my stomach.. today i was feeling stomach ach and my doc in office gave me Cyclopam after taking that i feeling drowsy. My often get this problem.. when ever i eat any thing out my stomachs is not baring it. how to improve my digestion problem.