I have had some similar symptoms with breathing for about a month ever since I did some running. Feels like I'm trying to breathe through a concrete wall. Hard to get a good, deep breath. But my chest (right side) has also been hurting...feels like it hurts straight through to my back right next to my shoulder blade. My doctor thinks it is anxiety and threw pills at me. I do not think it is anxiety. I shouldn't be in constant pain and discomfort for a month. I hope you get some answers.