Help me diagnose my FIBROMYALGIA!?

At the risk of becoming one of those people doctors hate (you know, the ones who diagnose themselves with some sort of horrible life threatening disease, but upon seeing their doctor it's really just a papercut..), I've been doing a lot of research lately and would really like some opinions. My symptoms are: widespread joint pain (sometimes very severe, especially in knees and elbows), muscles spasms/twitching, severe depression & anxiety, fatigue (or laziness, I'm not sure, but I'm going with fatigue for now), trouble falling asleep and staying asleep, extreme reactions to hot and cold, restless legs syndrome, occasional trouble in urinating/emptying bladder, and concentration issues. Some of these symptoms I've had for years so I've never added them up, I've just treated everything by itself as it developed, but with my pain getting worse and worse I thought I should definitely consider this. So, please, if you've had experience with fibromyalgia or are just very familiar with it, I'd love your input!!