cc is right, the undec. ester in sustanon lasts a month. are you doing your pct with only the nolva and clomid? i would HIGHLY recommend you including an aromataze inhibitor. the best ai in my opinion is aromasin(exemestane) bc it is suicidal and does not cause estro rebound when you stop taking it. you could also benefit from some hcg, it will bring the testicles back up to proper size and help your natural test levels come back up faster.

also, something i encountered when coming off tren was a loss in sex drive. i didnt encounter any ED issues, but only the drive. this is a very common thing and is caused by prolactin. you may be one of the lucky few and not have this problem; but if you do, grab some cabergoline or pramipexole to drop the prolactin levels and turn yourself back into the horn ball you and your girl want you to be