It sounds like you are having some very bothersome symptoms! Sine the pain is still there, and even moving around in location despite use of medication, at this point the best thing to do is go back to your physician for further discussion and evaluation. It is quite possible that you do simply have a muscle strain
or imbalance, but given the extent of your symptoms it may well require physical therapy to strengthen and get back to normal. However, it is also possible that you are suffering from some other sort of medical problem, as other things can cause pain in the lower back or flank. A kidney stone, kidney infection, irritation of the large bowel, hernia
, or even a testicular problem could cause pain in this area. In order to determine what might be causing your symptoms now, it will be important for your physician to take a thorough history of the pain you have been having recently, as well as any other health problems you have. A complete physical exam will also be very helpful to make sure that this does still seem like a musculoskeletal problem and not a symptom of something else. Hopefully you will be feeling better soon!