Beau- sorry I got confused I'm not sure about the pregnyl. When I've had trigger which is higher dose than pregnyl then progesterone support in tww it's taken about 10 days to clear. When I've had trigger then pregnyl injection support in 2ww I'm not sure how long it took to clear because I never tested after I got a negative result. But I would always get af at about 15 pr 16 dpo regardless of having pregnyl 5 or 6 days before ( I can't remember exactly when last one was but it was less than 10 days) hope that help. Good luck. Everything crossed for you.