My little darling,

Mommy had her first visit with the doctor today.  And mommy's first doctor was wrong.  You're only about 4 weeks old.  The doctor told mommy you were 8 because he hadn't seen me yet and wasn't sure.  Mommy got a blood test and is waiting for the good news.  But Mommy and Daddy saw your little self on the ultrasound today.  You're very small but soon you'll be much bigger!