Renee, sorry to hear you are in so much pain.

Sounds to me you are in a bad way which is a concern considering the car accident was 4 yrs ago...you shouldn't be in this much pain after 4 years. I think you need to go to the dr's a.s.a.p and get to the bottom of this there has to be something that is causing this pain, tell them you want them to do whatever tests they can...you need to know what 's causing the pain so you can try and live a normal life.
Goodluck sweetie i hope you get some answers soon.