baby sitters in Concord area?

I'm in my third trimester of pregnancy and it's time to start looking for someone to watch my baby so we can have a chance to know each other when the time comes.

Are there any suggestions on where to look or someone in the Concord area who is available to babysit? It will be around 5 hours a day, about 3 days a week and from about 730am to 330pm every other saturday, if my schedule doesn't change when I return to work after delivery.