Hi Recently month ago my father undergone Bypass surgery at present he is having too much pains from chest to stomach , shoulder and other areas of body he feeling too much fatigue and he is taking Dolo 650 two times a day to control the pains for some time he feeling relief and he is not likely eat food even if he eat little spice food He is having too much stomach burning.So is it common after Bypass surgery?I am as son feeling too much depressed about his condition.He is also diabetic he can't take little sweets and every day his sugar spike 200 above even he is not any sugary foods.So,any diet to be follow and can he eat non veg foods like chicken.Please provide any instructions. Thank you