Is it normal???

Lydia • Mommy Of 3 boys 09/03/08,13/31/10,12/13/15
Today I Went To My Doctors Had A Ultrasound And I'm Supposed To Be 14 weeks 4 days He Said That My Baby Is Measuring 15 Weeks 5 Days I Was Kinda In Shock Didn't Have A Chance To Ask Questions But Is that Normal??