Good evening! I had my third screening today, my due date is the middl…

Good evening! I had my third screening today, my due date is the middle of week 32, ultrasound showed 34-35 ??? I've always matched the due date before. They said everything was good, just a big princess ?). But something feels off for me. Has anyone experienced a large discrepancy in their due dates? How did they give birth according to the due dates?