Start with 30mg of Nolva a day for a week and if itchiness doesn't subside a bit up it to 60mg a day for another week and if that doesn't do it stop your cycle and then pct. It will be 11 weeks on which is not bad at all, you are 'lucky' it didn't happen earlier.
You don't want it to go deeper,take this advice from a man that still has a sensitive right nipple a year and a half after his last cycle!
I got it from the arimidex rebound.
Nolva affects the lipids but it won't really affect your gains.
Also if you have the option to get aromasin that would be even better,25mg every other day would do the job.

Good luck bro