Hey there,
I'm sorry to hear that. Yes, it could be fibro, but it could also be a million other things! What you should know is that fibro/MPS/CFS are mostly exclusionary diagnoses, meaning they're stated once everything else has been ruled out. Even the "tender-points" diagnosis is heaviliy flawed and many doctors don't rely upon it any longer.
Of course it's very real though!! There is however a difference between somatic pain and fibro pain, I suggest you read up on that.
Countless doctors are not familiar with diagnosing and correctly classifying symptoms associated with fibro, hence it's usually a LOOOOONGGGG road from first symptoms to diagnosis. And a just a blood test is well, the tip of the iceberg.
You're probably gonna have to go to various specialists, such as orthopedists, rheumatologists, cardiologists, neurologists, etc... in order to rule out several diseases.
It took me about 43 doctors to arrive at the diagnosis of fibro and myofascial pain syndrome. So hang in there, don't think the worst and let us know how we may help.
Felipe