I've had poly neuropathy's,but I would suggest a spine Dr. or a ortho,
because if that was something that happened while getting up and
you didn't have the problem before..You need that back checked no fooling
around..Look it could be a broken rib as long as it didn't puncture you lung,
you would not believe how much that hurts..Nothing much you can do with
a broken rib,but the lung wow..You do need a MRI, calll your Neuro or
GP and tell them what happened and to point you in right direction.
Or go through the ER. I have PN in the spine no fun. Hugs to all Sue