Hello, You are suffering from left sided severe pain and dull pain across the back. You also suffer from bloating. Your symptoms are indicative of sprain or strain, gas in the digestive tract, developing sciatica, diverticulitis, problem with the spleen, etc. You are suggested to get clinically examined by a GP, get required blood tests and investigations / imaging tests done to detect the pathology causing you symptoms and discomfort. You will be accordingly treated. You can take acetaminophen or naproxen, one stat after food to get rid of pain and inflammation. Massage therapy and physical therapy may be helpful. Since you are bloating, you should avoid getting constipated. Take laxatives and stool softeners for better bowel movement and less gas formation. Include fiber in your diet and stay adequately hydrated, take water and fluids in sufficient quantity. Taking PPIs and antacids, one stat wen needed will help to relieve the discomfort. Stay away from addiction, smoking, alcohol, drugs, etc. Take care. Hope I have answered your question. Let me know if I can assist you further. Regards, Dr. Nupur K., General & Family Physician