Type-IIx
Member
E2 does peak 1 day post-injection (at 200 mg even) into the supraphysiologic & declines back to base-line over weeks. So, while it may be that you're being paranoid (don't irritate your nipples by obsessively prodding and poking them, this can cause nipple sensitivity), it is in fact at this time that the use of exemestane makes the most sense, and that gynecomastic symptoms are most likely to arise.

