Thanks for contacting healthcare magic. You have problem of abdominal pain and back pain that may be because of more amount of gas formation in stomach. Referred pain feel at back region because of more gas accumlation. Avoid gaseous foods like cabbage, cauliflower, broccoli, carbonated drinks etc. ... Avoid alcohol drinking and smoking. Avoid spicy foods and oily foods. Drink more water per day. Avoid stress. You can take simethicone drug for gas relief. Use ginger and garlic in food for proper digestion. After taking this much care still symptoms are present than you have to consent a physician for further diagnosis. I hope my guidance is helpful to you. Take care. Thanks.