Hello oceanaeyes,
May I welcome you to this wonderful site and hope that you find good support and understanding.
Just a bit of information in layman's terms, not in any way a medical viewpoint.
A shortage of white blood cells is not too good. If you get this you can't defend yourself against infections very well. Minor infections that wouldn't normally affect you much can cause a fever (doctors call this neutropenic fever). It can also lead to blood poisoning, so if your WBC is high at an acceptable level this is ok. The thing to be cautious about though is if it is "abnormally" high or low, then that is when your doctor who is involved in your care would have to look into it. There is a standard measurement that is used to evaluate blood samples, so if it falls well below this or way above it, then this needs looking into.
Also fibro cannot be diagnosed by blood testing. It is usually diagnosed by a tender spot examination and other diagnostic testing - that's a simple way to put it, but this is the way it is diagnosed.
Hope this helps.
Take care
goldenwings