Go...to...a...doctor. Or preferably a sports medecine physician. They deal with those on a regular basis. But...I doubt you actually blew your shoulder out.
Help. I pulled my shoulder bone out and need to pop it in how rame against the wall?
Not a very good idea to put a shoulder joint (or any joint) back in yourself, you could cause a more serious injury. I surgest you take yourself down to your local hospital where they will do it for you.