I went ahead and went in today for an u/s just for my peace of mind. I was able to have a normal u/s (no vag cam) so that was nice. All three babies look great. They are starting to look more and more like babies.
Heartbeats:
A: 170's
B: 190's
C: 180's
Next u/s is in 3 weeks when I am 12 weeks.