Measuring ahead..

Hi, so I’m a first time mommy technically 32 weeks but just had a growth ultrasound Monday 10/19 they told me I’m measuring 3 weeks ahead and baby is 5lbs already & head down. Which would put me at 35 weeks Monday. My due date is currently Dec 17th, do you think it’ll change? I’m so miserable at this point terrible lower back pain mild cramping and terrible kicks to the ribs. She’s running out of room I’m personally don’t think I’ll make it out of November.