To answer your question the HCG may or may not stimulate your balls to produce more but I would think that will make matters worse by suppressing the LH/FSH. A low dose of clomid would likely be a more suitable option to stimulate your own LH/FSH which will in turn stimulate your testis.
To be honest though, if it were me I would pay my doctor a visit and explain my past AAS and SARMs use. The doc will then decide what to test you for. IMO it’s not wise to take that blood work as an overall picture of health as anything could be going on and causing your issues. To me at least, the fairly significant time between your SARMs cycle and your symptoms makes it less wise to assume that they are linked.