Im on a cycle and my left nipple is getting very sensitive and wont come off hard really. It is kind of pain but not really, is it suppose to be really painful? It goes away and comes back. Its only been 2 weeks and obviously prop has kicked in already. I started doing 10mg nolv ed after 1 week, should i do letro for a few weeks or until it goes away at .25mg? Wont kill my sex drive since im on cycle right?