Our second ultrasound was 2 weeks later at 8 1/2 weeks. I was calm for the first week, but the second week in between I started to feel nervous. Once again, as soon as I saw the heartbeat I was more relaxed. It was amazing how much the baby had grown in 2 weeks! At this ultrasound, we were able to see the head and body, tiny little arm buds and the umbilical cord. It is so amazing what you can see on an ultrasound! The doctor said the baby was 2cm. To give a reference for the size- about the size of a blueberry.