i have bad hypochondria when it comes to my breasts for some reason, i finally started to relax until a few days ago i got this sharp pain in my left arm, i slept it off and it seemed to have went away....until i woke up with a very sore bottom left arm pit and made myself believe it was breast cancer.... i dont get how i got this pain, i havent shaved in a few days, but i lifed my arm up and i had a small patch of red skin only it was no where near the pain, i have a small lump where the pain is BUT i got that a year ago from a shaving accient and it has never hurt before, whats also weird is it seems to hurt more when i get stressed and my heart rate goes up. does this sound like it could be a nerve? something from stress? razor infection? im only 20 and just the thought of breast cancer makes me get very anxious :(