Welcome to our Fibro Family!
Some of what you have described does sound like Fibromyalgia, but there are other dd's out there with symptoms that are almost the same. You need to see your doctor so tests can be ran to rule out anything else. Usually your doctor will refer you to a Rheumatologist later. As SleepyBug pointed out, there is some interesting information on the 2nd thread from the top called Fibro 101.
All you can do is make an appt. with your doctor and go from there. Hopefully your doctor is one who is familiar with Fibro. For my 1st visit to the doctor, I took a list of all of my symptoms. I even wrote down small things that I didn't think would matter. Some times we get to see the doctor and forget half of what we have been experiencing. This way you will already have it down on paper and you can just hand it to him. I also wrote down on another sheet of paper all the questions I wanted to ask.
As far as your age, as SleepyBug said we have others here on the forum that are young, even younger than you are. It's the same as the symptoms...not everyone will have the same symptoms and I guess it is hard to pinpoint the age. I think they are just saying that most affected with Fibro are that age group.
Good luck and let us know how things go. There are many helpful, caring people here, so feel free to ask questions or just join in.
Hugs!!! Margie