i have noticed pains in my breasts, it is mostly the left one but I do get them in both. the pain will come randomly for a second or two then go but it will come back. it seems to always be on the area beside my armpit. I started to worry in case it was breast cancer but I have checked and there doesnt seem to be any weird lumps also breast cancer does not run in my family. and just recently I have started to notice that my left arm also feels numb or tingly as well sometimes, usually when I have breast pains. I am a 17 old year old girl am and low in iron if that could have anything to do with it?