I pretty much failed the Lung Function tests so I gotta see what's the problem with that and why it hurts in my lower back area when I try to breathe in MORE air, and breathe out MORE air (I don't really think it's a spine issue, though). It kinda feels like I used to be able to expand and extract with no problem at all. Now it almost feels like there's not enough space inside for me to do this without me feeling some pressing pain. Trips I've made to the Pulmonologist this year have said my lungs are normal, so I assume it's not a physical lung problem. X-rays of the L-Spine show everything normal. Anyone have any opinions?