Marlee, this has happened a few times to me. I get lightheaded a lot and anytime I bend over or crouch down, I get very dizzy when I straighten up. The sensation you describe, I have had but it only goes as far as my pelvic area and it hasn't happen enough for me to be concerned about. It is a weird sensation though, definitly an attention getter. I will be interested to hear what your doctor says about it.
Gosh Marlee, no I have not. I do get light headed once in awhile. It just comes out of the blue.
I know what it is Marlee- it's just because you have such a "WARM" personality-
All kidding aside, I would not get too concerned unless it keeps happening and then it's probably this fibro anyways. GamJill