I have my second ultrasound tomorrow and she says I should be able to see the yolk sack, the embryo and possibly the heartbeat!!! Last week at 5 weeks and 4 days all we could see was the gestational sack but she said that is normal and it was measuring perfectly and is in the uterus where it is supposed to be. I still am having a hard time believing that I am actually pregnant!!!! I can't wait until I can actually see the baby!!!