After 36 weeks

I would suggest going. Besides those tests mentioned, your gynae will also check your amniotic fluid level and if baby is in any form of distress. Plus it'll be helpful to monitor your vitals. I have a friend who delivered before EDD as the amniotic level was too low at late pregnancy and it wasn't sufficient for her baby to stay in till EDD. She wouldn't have known without the ultrasound during check up.