Hi Brandy! Could be GBS but then again it might be something else. I had a simular problem with my back and CT Scan showed nothing. Went to a back specialist and they found 3 bad disk requiring surgery.A CT Mylegram will show back problems that won’t show on MRI or regular CT Scan. But let the doctor know you had GBS. They might do a nerve conduction test also on you and you will have that report too to give to a neurologist. I think I would actually see both. Kill two birds at one stone and may find it not being GBS or might be GBS and actually could be both. Welcome to the site! Great folks in here and a loving family!