After about 6 weeks your balls should be just about the right size, possibly not even that.
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Your dose is 500iu/week (is rather small)
In healthy testis, the replacement dose of HCG is about 309iu/EOD, that is 309*7/2=1081iu/week
Per reports of other people dose,
(Phil) 400x2*7/3=1867iu/week, he is secondary and his testis provide partial testosterone supply.
colkurtz_spf and jinxie are secondaries, use much larger doses of HCG, their testis provide all testosterone with that stimulation.
http://anabolicminds.com/forum/male-anti-aging/94855-trt-works-my-2.html#post1372299
http://anabolicminds.com/forum/male-anti-aging/96041-hcg-monotherapy-success.html#post1385612