We had our 28-week ultrasound today. I was looking forward to this appointment for a couple of reasons. We haven't had an ultrasound since 18 weeks and it's really hard for me to tell which baby is moving. All I know is that I feel a lot of movement, but since I don't know how the babies are positioned it's virtually impossible to tell which baby is moving. This causes me some anxiety, (i.e., what if only one baby is moving and the other isn't, etc etc). Having twins, there is also some risk that the babies will be very small or that they aren't growing at the same rate. Apparently we don't need to worry about any of those things! Both babies have nice, regular heartbeats and are moving up a storm, which are both signs of healthy babies. Baby boy is currently estimated at 3 lbs, 3 oz, which puts him at the 78% percentile (on a SINGLETON scale!). Baby girl is estimated at 3 lbs, 10 oz, which puts her at > 90th percentile!!! That means I'm already carry...