Had a sharp/dull pain on my left side directly on the second/third rib below my breast for over a year now. the pain is on and off and is worse when inhaling. what is this? what can i do to relieve it when i feel the pain? will a chiropractor help?

Chest pain/breathing: If one is sitting and not taking deep breaths, the lung (like a balloon which has lost some air) will collapse a little, and the surface is "sticky", so when the wall folds, a deep breath will inflate the whole lung, which causes what is called "pleuritic pain", which can be quite sharp...breath in slowly, and the pain will go away....the lung surface has many pain nerves .