Bro, curious as to what's your reasoning for starting it 3 weeks into a cycle? I think I read recently, someone said because that's how long it takes for the body to shut down?
a) I don't think that's correct...if not mistaken, the body shuts down with as little as one shot of test or de-ca for example... (I'd have to research to verify);
b) Why wait until the body has completely shut down? Isn't the point of running H C G during the cycle so that the body does NOT completely shut down?
As for doing it after the cycle, from my experience, I think it's a bad idea to run H C G that long after the cycle's finished...like you're delaying recovery, plus a consensus seems that running it alongside with clo-mid and nol-va isn't such a great idea.... so rather, it's advisable to run it while the esters are clearing, not after... so for shorter esters, run it for the last 10 days of the cycle (500iu ED for example)...if longer esters, several days or so after the last shot...again for 10 days at 500iu ED
Just my 2 cents!