Measuring way ahead!

Marcie • Mommy to 2 beautiful girls! Pregnant with baby #3 💖💖💚
I've always measured about 2 weeks ahead since my dr started measuring my growth.. the last 2 weeks I've measure 3 weeks ahead and now I'm measuring over 39 and was only 36+1 at my appointment.. she's sending me for a growth scan this week (which I know are so inaccurate) to check her size.. anyone else experiencing this? Tia!