Ok this might sound strange but in September i used Sustanon (sust) once, i got sick (not from sust) so i layed low for a little bit, didnt work out to much since i was sick so just decided to discontinue. I didnt use anything for pct since i figured one time use wont do anything... well now my nipples get irritated quite easily, theyre hard most of the time. I'm not sure if i have a lump per say...? theres a little hardness under the nipple but it doesnt stick out to much. Just a little puffy around the area. I dont think anybody could notice a difference but me since i have low bodyfat. So I assume i have high estrogen now, and i just want my hormones to get back to the way they are supposed to be. What can i do? or what should i do? I heard letrozole could help, but i feel that is a bit extreme seeing that i dont have huge gyno. just want somethiing to help my hormones get back to normal and relieve my irritable nipples...