my lower armpits/side of my breasts have been itching for a while now. Its about right where my bra reaches my armpit. The other night I noticed what feels like a low lump on my left side more in my breast tissue but I"m not sure, and it hurts on both sides if I push on it. Also I'm large breasted- 34- GG so I have shoulder pain too, could this be related? Anyone with similar symptoms? I haven't changed my bras, deodorant or body soap.