I heard people get off HCG because their estrogen got too high. Not sure why, maybe because it has such a short half life, or there is a different response when you have TRT and endogenously produced testosterone from the HCG? Or maybe HCG causes a feedback responses which ramps up estrogen conversion?

I convert a good amount and my estrogen was definitely higher than the normal range last time I checked it and I was on just 125 mg test/week + around 900 units of HCG.