24 Week Check Up

We had our 24 week check up on the 16th of December. We heard the heartbeat nice and clear and everything is measuring right on schedule. I did ask the Dr. if we can keep the April 1st due date and she said no. Sorry honey! She is concerned that if I go into labor an hour a way the drive and the ride would not be pleasant. So what does this mean? We are looking at a March baby! It is not the Sapphire stone that I wanted for my mother's ring but at least it is blue. Maybe in a year or two I will get the Sapphire.