My nipples have been quite sensitive for the past two weeks or so. My period isn t due for another 2 weeks, and I m sure I m not pregnant (because I haven t had sex in a while). It s not the areola, only the nipples, and they re so sensitive that sometimes i feel them rubbing against my bra, and it feels good. (There isn t pain, only ever pleasure from their sensitivity.) Can you tell me why they re so sensitive?