Well I went back today for my ultrasound and Baby B HAS A HEARTBEAT! 2 weeks ago we only seen 1 sac, 1 week ago we seen 2 sacs and 1 baby, now TODAY there is two sacs, 2 babies, and 2 heartbeats! The second sac had grown a good bit too. He said it seems like baby b didn't make in into my uterus on the same day that baby A did. They said by measurements there is a 4-6 day difference, but that we have to healthy growing babies! I'm still in total shock!