All 3 of my kids were conceived while I was either on a cycle or on TRT. I was nearly 40 when my 3rd son was born and had been using test for many many years at that point. I used low doses of HCG religiously for well over 10 years and I never let myself get/stay shut down entirely. I believe that is why I stayed fertile for so long. I recently had a vasectomy and stopped HCG, I'm too damn old to risk another kid and I don't care about my ball size any more. I don't know if you have had blood work or a sperm count to find out your exact condition, that would help people who might give you advice. My advice based on my personal experience would be not to get shut down hard in the first place and using maintenance doses of HCG gives you a fighting chance. Younger guys who think they never want kids might feel differently when they are older and their priorities change. I personally know a couple of guys who had success with HMG but they spent a lot of money and time on it. Good luck.