I am on testosterone replacement therapy through a dr. I am using something called nebido and I get prescribed a large amount every 12 weeks. My doctor has me on 900 mg and I inject it every 4 months. I already have two kids and don't want anymore. The weird thing is since I started on this I have not felt good, I'm losing strength and muscle, and I have Tender nipples. what is your opinion of what's going on