How long do your RE's keep you on PIO after a successful cycle? Just curious. My RE stops at 8 weeks (which was yesterday). I'm nervous, of course, and I think I am going to finish off the bottle. When I was 7 weeks, I asked the PA about the placenta taking over and she said it had already taken over but they go till 8 weeks just to be safe. That seems earlier than a lot of RE's.