Here as per your explanation. I suggest the treatment what your doctor have given is right. Acenac mr is basically for pain and muscle spasm , evion LC is with vitamine E which will help for muscles and skin., As per your question here you are not sure what is your problem, here as per your explanation I feel its related to your back. Either it will be related to spinal muscle spasm at your back or it may be related to disc issues at back. At clinic i do various test to check but here you can check on your own do you aave radiating pain ,numbness, tingling sensation from your back to legs if yes then it can be related to disc. How ever conformation ca be done only by MRI. And you can take steps as per it. For severe damage at disc level ortho will suggest for surgery. In your case since its started recently will not be serious. There might be minor or no problem can be detected. For any of this still since there is pain you have to do conservative management that is take the tablet suggested by your doctor and take a back strengthening exercise program from a specialist like physiotherapist. And do it regularly. This will help for to improve strength and stamina of your spine. Your testicle pain may or may not be related with this. So check at any time if there is a swelling and pain as well difficulty in passing urine. You need to have anti biotics also for this again need to check with specialist, don t start on your own. I am sure this will be useful for you if you follow the steps. Take care.