Patient: I am currently boosting my testosterone in order to gain size in the weight room. I have been lifting weights for 5 years and I am in very good shape. I have boosted test levels very high lately and have experienced small lumps behind nipples, sensitivity, and swelling of nipples. I have been messing with Test levels and working out heavy for 5 years and have never experienced this. I am concerned this may be Gyno. Will this go away? By taking an anti estrogen this late fix the problem? I am very concerned. I work to hard for this problem.