From what you are saying, you really didn't have all the testing done that most of us have. They take many vials of blood, x-rays and sometimes MRI's to help rule out other illnesses. Many of the same symptoms of fibro are like other illnesses. In Fibro 101 there is a link called What Else Could It Be. That will give you some idea as to what they are trying to rule out.
The Tender Point Test is used but not all of us have a specific number of tender points. Some have more than others so it really isn't a great diagnostic tool but it's the only one they have right now.
I have some fatigue but not extreme fatigue...unless I totally overdo. But, as everything, not everyone has the bad fatigue with fibro. There is a list called Symptoms on Fibro 101. You might want to reread that and see if this fits you.
I do hope you get some answers. That's hard to deal with.
Sherrine