I got hurt on about 1/28/2015 and today is 9/8/2015 and I'm still in chronic pain. Is there a case here?

A disc fell out of place on my lumbar spine and my back or myself have not been the same ever since. I'm in constant pain and can't really do many physical activities due to the pain. I went to doctors and physical therapy for about 4.5 months and the therapy didn't really do much for my back. I told the doctor this but he didn't seemed to believe me. By the time I was "cleared" to go back to work, my boss said that there was "very little work to do" and pretty much fired me. I was wondering if there was anything that can be done about this, because I have always been a healthy, physical, athletic young men and now my life has changed. There's many things that I can't do, or do the same since the day of this injury. I'm only 22 years old and I feel like I'm too young to be feeling this type of pain at this age. If you could please contact me for more info that'd be greatly appreciated. Thank you for your time. Joe