Suggest Cure For Sickness In The Stomach

iam 27 years old male working in qatar(gulf).iam suffering from gastric since 4 month,presently iam taking homeopathy medicine, but still iam not feeling better.symptoms are morning before > wakeup stommach pain,gas trouble,after wakeup iam going toilet& stool will loose & bright in colour.after toilet somach feeling like nousia or like indigestion. then after breakfast i will feelgas(bloating),burning,pain sometimes at lower stomach.after lunch immediatly i feel good&after 2 hours starting burnig,feeling to go toilet,feeling release gas from down side,but some times i could not relase gas.and after night it will be good. If i eat fried,oily,coffee,spicy foods,milk or dairy products the symptoms will be more please suggest me take ayurvedic medicine & dieting.please reply me....