I am 35 and was started on prescription Hcg by an endocrinolgist/fertility specialist for low energy and low sex drive. I had testosterone levels in the 150-200 range prior to starting the Hcg. He originally started me on 2,000 units EOD for a couple weeks then dropped me to 1,000 EOD. I felt really good at 2,000 units dose. My sex drive and energy were back up, and I was actually seeing a difference in the gym. While on this dose, he checked my testosterone level and it was 750. After dropping to 1,000 units EOD, my sex drive seemed to drop a little. I was still making progress in the gym though. My testosterone level at this dose after about 2 months was 550. The whole time I was on the Hcg, my nipples were a little more sensitive and puffy than before starting Hcg. There were no lumps or palpable glandular tissue though, so I didn't worry about it too much. Then after about 3 months of total time on the Hcg my current problem started. It seemed like overnight my nipples got significantly more tender(even painful) and I can now feel nearly marble sized firm rubbery tissue directly behind my left nipple. There is similar tissue on the right, but to a much lesser degree. After noticing this, I stopped the Hcg and started 25mg of exemestane per day, and have been doing that for about a week now. The nipple tenderness and size of the rubbery tissue has decreased, but has not gone away. Has anybody else experienced this with HCG? Any suggestions to treat it other than the exemestane I am already on? Letro mabye? I can already tell a difference in the gym though and would like to start some testosterone. I am concerned though that this will make the nipple tissue worse(grow). Any thoughts on starting testosterone? I have been a member on this site since 2005 mainly just reading. I rarely post. I would really appreciate any help or info anybody could give me with this. Thanks.