Welcome to the board. You have a lot on your plate and I feel for you.
Stress definitely does affect the recovery process. Sleeping more is normal and most doctors not understanding the injury is unfortunately normal too. There is a vitamin and supplement thread at the top of the pcs board that you cant start to follow.
I hate to say something as simple as cut your stress, realizing the situation you're in, but it would certainly help.
Others will be along with more helpful suggestions and advice.