I know what gyno is and I have heard that if you have a bad pain in your nipples, you need to add some anti-estrogens in. But, my pain isn't that bad. I have to squeeze them to get a LITTLE pain out , but if I poke them, I can't feel nothing. Probably just a mild case of estrogen related sides. I'm on a test enan only cycle for 10wks at 500mg a wk. I started feeling the pain at about 3wks into my cycle and waited to see if it got worse. Well, it's my 5wk so far and it is still the same. Whatcha think. Probably is nothing too bad to worry about. Thanks!