Had another ultrasound yesterday, and we are now sure that there's only one baby. She's (I think it's a girl!) growing strong and right on track; but the other sac remains empty. I guess it's pretty normal when that happens...but it's still very sad. At least we have one, and that's all we could ever have asked for!! I'm still feeling pretty good...a little queasy the last 2 days, but nothing that shoving food in my mouth doesn't cure!