"Left in pain"

I was taken by ambulance after fainting at home, hitting my head and shoulder on a table. Ambulance crew were great which is more than can be said for my treatment at the hospital. The doctor i saw said it was due to taking too much pain relief, wrong, it was due to low blood pressure. At no point was my shoulder examined dispite my saying it was painful. 4 months later, i am in pain 24/7, un-able to sleep, dress/wash myself etc. I have now been told, i need injections, (x-ray guided) before surgery, but the wait for the injections is a minimum of 4 months. So by by the time i might get treatment will probably be near on a year, disgusting. I have even paid for private physio, accuncture, tens machine, etc but no relief from 24 hour excruciating pain