Yay for 15 weeks! I felt exactly like that... like ok, the miscarriage concern is over, and we're not really in the pre-e risk zone yet, now what do I do? The waiting game. I tried to enjoy it. It's the one time where you don't have much to worry about. But all I could think about was the imminent growth scan around 20-21 weeks, knowing that if the baby is growing appropriately, we're off to a great start (better than the last time for me). Well, my baby turned out HUGE at that scan, so I'm far more positive than I thought I'd be and looking forward to each week.
For me, the frustrating thing about being 13-20 weeks was fielding all the questions and comments from well-meaning people. Like, "how do you feel?" I'd say, "I feel great", and they'd immediately pursue to confidently tell me that that meant all was going to be perfect this time. I'd tell them that I felt perfect at the same gestation last time too, but it would go in one ear and out the other and we'd say it all again the next day. People... the pot is not going to boil yet. Ask me again in 8 weeks. Sorry, I'm turning the vent valve off now.
Lots of luck with the new doctor. Keep tabs on them... let's hope this is an entirely different experience for you! Better make sure you have room for that new stroller you're GOING to get too! I'm having too much fun preparing for this baby girl that I can't get any work done around here.