Hi, There is something I'm wondering about which is I experience under arm and breast pain and I'm in process of taking care of this matter but there is something I'm worried about. My doctor told me my under arm was infected and he gave me antibiotics until I felt better and not only I felt better I realized I stopped having this sharp pain and feeling under my arm but now I have the same pain and feeling again. It keeps coming back. I want to know what do you think this could mean since it made me feel better? The pain and problem keeps coming back back though.