Any pain that is intractable, severe, or otherwise accompanied by symptoms that suggest infection,like fever or chills, should be promptly addressed by your physician.The symptom you are describing(abdomenal pain radiating to back) is mainly seen in pancreatitis or choledocholithiasis. to r/o or confirm some investigations like ERCP,CT abdomen are required.apart from these two there are many conditions that cause abdomenal pain like disease in liver,gastric diseases,infections etc ,to decide what investigation is exactly needed physical examination is required.It is better you consult a qualified physician who will do priliminary examination and guide you to specialist if required. If your pain appear is accompanied by symptoms that are familiar to you, such as constipation or the feeling that you are unable to pass gas, you should increase your intake of water, and try an over the counter remedy such as Metamucil or another dietary fiber, or Gas-X, respectively. It is always important to be aware that right upper quadrant pain may be associated with conditions that range from fairly insignificant to life-threatening, and if your right upper quadrant pain is unusual in nature, or accompanied by other symptoms,you need to consult a qualified dr.