I Have Been Having 2 Types Of Very Painful Occurrences
Muscle relaxants and corticosteroid should be used.
Detailed Answer:
Hello dear, welcome to "Ask a doctor service" . I read your query and here is my advice.
The symptoms of back pain, keg pain and charley horse muscle locking ( only one side, right side) are more related to a spinal nerve compressions. I guess the problem with your back may be a herniated ( bulking) disc in lower spine.
Taking aleve and / or advil is very important to manage the pain. Also you may talk to your doctor to add mussel relaxing injections such flexeril.
Also having corticosteroid injections around spine can be useful.
If you use muscle relaxants you will have less charley horse episodes.
Also you may consider massage, yoga and chiropractic.
Hope I have answered the question.
Let me know if I can assist you further.