Hello and Welcome.
I am so sorry to hear about all the generalized pain you are experiencing, especially at such a young age.
Wide-spread pain can sometimes be a systemic issue. What physicians have you consulted? A rheumatologist may be beneficial. I would want my physicians to rule out such things a RA (rheumatoid arthritis). There are multiple other systemic conditions that may be responsible for your pain.... so please have these possibilities looked into.
Internal Medicine Physicians are also good in my opinion at sorting through lists of symptoms. It's also possible that you could have several things going on and not just one.
You may also find good suggestions on our Undiagnosed Symptoms Forum. Here's the link:
http://www.medhelp.org/forums/Undiagnosed-Symptoms/show/95
You are always welcome here..... it just never hurts to cover all your bases. At the very least your symptoms should be treated until a reason can be found.
Please let us know how you are doing. I'll look forward to hearing from you.
Take Care,
~Tuck