35 weeks but measuring at 37?

Vann • Wifey 💑 and mom to Joey & Adrian 👦🏼👶🏼
I'm 35 and 4 weeks but my OB said I'm measuring at 37 weeks. He told me "slightly bigger than average," however, won't move my due date (June 9th). 
I'm having a hard time walking very much at all due to really bad swelling in one of my ankles but he doesn't seem to care about this either... 
Should I bug him about moving my due date or just leave it be?