So after 6 months of adding FSH to my TRT protocol I got a sperm analysis done.
A quick background. My fertility was normal before TRT and went to zero when I started TRT without HCG. Adding HCG 500 IU 2x a week my sperm analysis results were:
sperm count 2.1mm (normal >=20mm)
total sperm 7.2mm (normal >=40mm)
Subfertile with not great chances of getting my wife pregnant.
I tried to increase HCG to 500IU 3x a week but results were basically the same and it didnt make me feel good. So I asked Dr Saya if I could try FSH and he was ok with that. I have been taking 50IU 2x a week (less than the dosage prescribed... long story short my wife got pregnant and miscarried and we decided to hold off on another baby so i decided to use a much lower dosage just to save money and see if it would work).
So after 6 months on TRT with testosterone + HCG (500IU 2x a week) + FSH (50IU 2x a week) my new sperm analysis results are:
sperm count 15mm (normal >=20mm)
total sperm 52.5mm (normal >=40mm)
I am fertilile again! Thanks Dr Saya! The small FSH dosage worked!
So I am planning to keep using FSH in my protocol. At this dosage it is not that expensive.