I say this would prompt me to an emergency room to rule out heart or other issues first.

I know it's no fun, but with TOS, you can't assume it's JUST TOS, you know?

I have had times when I'll get a pain in the rib area - a raised bump like a hot dog shape of muscle - and I can't pinpoint if I particularly moved my arms or not...and it takes about two weeks to heal down.

Please keep us posted, and God bless you and keep you safe.