Anyone measuring far ahead?

Shana • Awaiting baby #2 Sept 2016 🤗❤️
I'm due Sept 3rd so currently 28 w 5d....I had my 28 week appt today & my OB told me that I was measuring at 33 weeks. She ordered an ultrasound to check baby's growth & also to see if maybe there's too much amniotic fluid. Anybody else every experienced this?