Things will fluctuate, even on HCG, even on TRT. When messing with the brain, balls and estrogen levels, there's a lot it could be.
Im not a doctor, so maybe he has is reasons. But LH is pulsatile, so a constant (or rising) level of LH seems like it's gonna cause weirdness. Ask him if it's ok to stop everything for a week and let it clear your system. Then add the HcG, then Adex back in seperately to see what's doing what. See if he agrees.
You felt great in the beginning for lots or reasons. It was a situation your balls hadnt seen in a while and they started to work, your system got flooded with Test, which is always a good thing, then everything leveled off...This is simplistic, but you get the idea.
Lets look at the first week: HcG has a 5 day life, if memory serves. So, Monday:500iu/HcG, Tues, 400+500, Wed 300 400 500, Thursday:200 300 400 500 Friday: 100 200 300 400 500, Saturday: Same as Friday...levels off with 1500iu of Hcg in your system.
Then there's also Pituitary shutdown. Like the balls do from AAS, the pituitary gets a signal to stop working from HcG.
Are you on HCG for a Testicular or a Pituitary problem, i.e. what is the origin of the problem? Im guessing Pituitary, otherwise HcG would not be effective at all and you'd be on TRT already.
I'm gonna put this forth because it has worked for me: HCG affects the testes positively, but shuts the Pituitary down even harder. I noticed this when taking AAS and HcG, balls were fine but I still felt like hell.
Clomid is not as dramatic in effect as HcG, but works from the Pituitary. (unless you have a pituitary tumor or have had surgery that ablated the area and stopped it from working). So pulsing Clomid works great at keeping the area sensitive and functioning as much as it can in your situation.
Im NOT making recommendations, just mentioning what worked for me: A couple weeks on HcG, then a week off, then a week of Clomid 50mg a day. Does me good. Gets the brain working, gets the balls working, gets to rest, then back at it.
Just my .02. Or it could be as simple as the Adex.
Adex burns me out bigtime after a short while, kills libido and raises bad cholesterol. Id ask for Aromasin. Also hard on the libido when overused, but less effect on Cholesterol and the only AI that doesnt have an E2 rebound. Just sayin'