Hey Dylan, I'm 18 and I started my first cycle of test e and It has been about 10 days and I'm noticing symptoms of gyno... I've done 4 injections of .5mL and I'm having puffy nipples, little bumps on the nipple it's self and I notice a little ball behind my nipple, however it's not rock solid it is still a little firm. When I feel the ball behind my nipple I notice a tender feeling afterwards. My question is should I take nolvadex to fix this problem or arimidex because I am confused on which to take to stop my gyno.