No offense to septuagenarians everywhere, or old doctors in general, but the problem here is that your doctor is old, stuck in his ways, and an idiot for telling you that after only four months of trying.
Like we discussed before, a sperm cycle is approximately 2.5 months in the body, and it takes time to wake a dormant system up after 8 years of being on test. You are just now seeing the results of what you were doing in the end of April. It is going to take another 2.5 months to see the results of what you are doing right now. It's way, way too early to give up hope yet.
As I've said before, my own fertility journey took eleven months, and contrary to the advice of my fertility doctor, I never went off test. The first 7 months were just Test + HCG, then I added HMG and eventually FSH for the last 4 months, before my wife became pregnant with our baby daughter.
My baby daughter is 19 months old now, big and happy and healthy and smart, and way ahead, at least a year ahead, of the learning curve for her age. She knows her alphabet and numbers already, reads words from books or off my t-shirts, tells you when it's time for her diaper to be changed, and she talks my ears off about Sesame Street and Paw Patrol and Blues Clues. She runs around the house or the playground all day, eats real food, not baby food, and tells me she loves me every night when her mother takes her upstairs to go to bed.
Imagine if I had given up after only four months, or listened to my fertility doctor? He's a morbidly obese tub of guts who refused to prescribe me HMG or FSH because they are "funny drugs", wanted me to get off testosterone, and never thought my protocol would work. When I went back to him with the ultrasound pictures of my infant daughter in her mother's womb, he was flabbergasted and didn't know what to say except to mumble congratulations. The fat clown couldn't admit he was wrong. Fat ignorant fuckwad. And this is a guy who is a well-respected fertility doctor who is revered in the local medical community, who referred me to him.
Don't get me wrong, there are many good doctors out there. But there are also many ignorant, arrogant, overeducated assholes who haven't bothered to keep up with the scientific literature since they graduated from medical school. And very, very few doctors know ANYTHING AT ALL about people like us, our little community of steroid users/abusers.
Rant over, but my point is, your doctor clearly doesn't know shit about people like us. It may be that you have pre-existing fertility issues or that your system is resistant to recovery, but it's way too early to say that yet.
Stay the course with what you are doing, or add test back in if you want to do so. As GotGame and others have stated, if you are using HCG and HMG or FSH, you are bypassing the normal negative feedback to the pituitary, so being on test is not a problem. GotGame recovered his fertility while on TRT, and so did I and many other men.
As stated, HMG is just a mixture of FSH and LH. HCG is a long-acting analogue to LH in the body; it accomplishes the same task, but the half-life of LH in the body is very short (a few hours), so it's an advantage to use HCG so that the Leydig cells are always receiving stimulation to produce high intra-testicular levels of testosterone, important for producing optimal levels of sperm.
The other more important factor is the Sertoli cells, which are stimulated by FSH. You can use either HMG or FSH for this; as far as I can see there's no particular advantage to using one or the other. I wish there was a long-acting version of FSH, but to the best of my knowledge such a thing does not exist. The important thing is that your Sertoli cells are receiving frequent stimulation from FSH, regardless of the source, so frequent small injections are best. The only reason larger less-frequent injections are given in some protocols is for reasons of adherence; most normal people would never stick to a protocol requiring daily or twice-daily injections. But frequent small injections have been shown to work best.
HCG to stimulate the Leydig cells, and FSH or HMG to stimulate the Sertoli cells, and possibly test for libido or to further stimulate the Sertoli cells (adding test is debatable, but it didn't hurt me or GotGame or many others.)
This, time and consistency will give you your best chances of having a child. But it will take time for the results to show up.
Get your prescriptions from your doctor, but ignore his advice, or at least keep it in the proper perspective. Your doctor may be a perfectly fine doctor for normal people, but you and I are not normal people. We are a special population with unique characteristics, so listen to people in our community who have been there themselves and done that. Experience is always the best teacher.
Best wishes and prayers as always, and let me know if I can help out in any way. I've been there and done that, so I certainly don't know everything, but I must know something.
My baby daughter says hi. Someday I hope your own baby will be saying hi back to us.