I have been having some pain above my right breast. It hurts when I take a deep breath. I thought it was due to straining a muscle in my back between my shoulder blades, but my back isn't hurting. I also feel a lump in my throat. I'm a 23yr female.?

Get checked. Pain taking a deep breath is probably related to inflammation around the lungs called pleurisy. There are multiple structures in the neck that can feel like a lump. Most of those are benign. You are in an age group though that sometimes a lump can be significant. I would recommend seeing your dr. To make sure this lump is nothing to worry about. Statistically should be ok. Get checked to be sure.