what would you do....

Tabitha
Today I came home pulled into my garage and was watching my surroundings got out of the car walked to mailbox at end of the driveway while talking to my mom and saw nobody. Next thing I notice there's this blue vw station wagon I've seen turning around after passing my house a few times (I live in a nice neighborhood in a culdesac). He stops rolls down the window I'm thinking for directions and says hi and I'm standing in my garage watching my surroundings on the phone and say yeah he says do you got a hubby? While backing up looking around I say yes he goes oh looks starts to drive off saying something and I literally open my car door while watching everything and push my garage door down. But see hes driving off. I'm a bit creeped out is this odd and the fact I think he's been watching/passing my house. Am I being paranoid or is this really creepy? What would you do? Thankfully I have a big dog who when the need arises will be protective. I'm a little over 5 weeks pregnant too. Needless to say I won't be hanging outside without my husband anytime soon I'll drive in and shut the garage and go in my house.