Don't worry - I'll stay positive! I just don't want to be caught totally off guard if it suddenly takes a turn. I think you have to try to enjoy it no matter how long it lasts because that part just isn't in our control.
It's terrifying though. With IVF there are betas and u/s every week starting at 4 weeks so there is plenty to get excited about and plenty to worry about. I'm just hoping that things will establish a pattern moving in the right direction. But I don't think you are ever really out of the woods.