Hi Meg, A term baby is anywhere between 38-42 weeks. An estimated due date is really just that - an estimate. So even though they give you a date you're just as likely to give birth 2 weeks before or after your EDD.
I certainly wouldn't be panicing yet - you're only a few days over
You can try and encourage labour by walking alot especially up stairs and having sex and doing a bit of nipple stimulation.
If your Dr is concerned you can always ask for an ultra-sound to check your placental health before making any descions regarding birth.