I know exactly what you are talking about... I have the same exact feelings... but I've had mine since Dec. '08. It didn't start off like that but the past month or so I've been getting those feelings. I've been going to the doctor since January this year. I've had so many tests done; like, 3 MRI's, 5 X-rays, nerve tests, blood test (which I'm still waiting for the results), etc. So far, the the 4 doctors I'm seeing all believe it's RSD (Reflexive Sympathetic Dystrophy), it's Type I of CPRS (Complex Regional Pain Syndrome). It affects your nervous system. In addition to all the other test I've been through, I also have more to come; like, a CT scan, a bone scan, a thermogram, and a couple others. I'm determined to get down to the bottom of this. So basically, if just for curiosity itself, look RSD up to learn more about it and maybe, this is what you have. Knowing the problem is half the battle. Good Luck!