Hi mommies! I'm 23 weeks along today! At 21+1 I had an ultrasound and got a call a few days later that baby was measuring right on target except for his/her head. She said babies head was measuring small. (She didn't say HOW small). So they want to monitor it and do another ultrasound at my next appointment on Feb 8th. Has anyone else experienced this? They told me not to worry but it's really difficult not to be concerned.