Well I'm in week 4 of a test/tren cycle, and the last day or 2 my left nipple has started getting a pea-sized deposit under it.. it's not really noticable yet but I don't want it to grow any bigger. The left nipple looks slightly more conical than the right as well.

How do I tell if its from the test or the tren?

I'm taking .5mg Arimidex ED (just bumped from .25mg ED) and 500mg Cabergoline per week, and 500mg B6 ED.