hcg mimics LH in the body. this means it will send your LH and FSH cratering even lower, since it signals the pituitary glands to stop producing these important hormones. it doesn't cause a rise in either hormone, it actually desensitizes the leydig cells.
you should NEVER use hcg anywhere near pct. and personally i wouldn't touch the shit ever
hcg is some dangerous shit.. the more you use it, the more chance you have of permanently shutting down your pituitary glands.. it would be like injecting testosterone during pct. makes no sense at all.
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what the OP should do is run the perfect PCT. it isn't too late to start doing it.
really if you want to cut to the chase a little clomid with hcgenerate will quickly plump those nuts up without causing any negative feedback loop or hurting your HPTA