12 week check- up

We went to the doctor on November 26th for another check- up and we were able to hear the babies heart beat which is at 156 beats per minute. It was pretty exciting! We leave for California on December 16th and we will be back January 7th, so our next appointment will be on January 14th when we get to find out the baby's anatomy through another ultra-sound. We're very happy and can't wait to find out if it's a boy or girl. We have picked out a girl's name, Lauren Mackenzie Mills, But as for a boy's name we have no idea...Any suggestions?