Sorry I can't be any help, but I'm wondering the same thing so I'll be watching out for any replies in this thread! Lets hope it is a pg sign!! When are you due to test? I'm testing on Monday. Did a hpt yesterday was BFN so I kinda lost hope a bit. But I'm not really expecting AF because BT showed I didn't actually O at all - I'm just holding out hope that I O'd later than would've shown up on BT. Good luck!