Nothing to worry about with the oestrogen it's going to take a little while till you figure out the AI dose you need to run, if you have aromasin don't run the nolva any longer then you need till you can manage your oestrogen hopefully without it. Aromasin is the better for controlling oestrogen as it actually lowers it instead of blocking it and Nolvadex lowers your IGF-1. I use Nolvadex when I notice my nipples get itchy (like you did) till I can get my aromasin to the right does. Supplementing with zinc at 50-100mg ED will also help regulate your oestrogen.