Stinging/burning in ribs???

Kacie
So, I wanted to see if anyone could help me identify what in the heck is going on in my ribcage/right under my breasts. It feels somewhere between rope burn and getting stung by a wasp in various spots in that area, and it is sort of random. Usually when I sit or lay down a certain way. Tends to be just slightly more toward the left side. Any idea what is going on? Maybe an idea of how to make it stop?