louder as i speed up, h2o pump? Could this be the water pump, thermastat, timing belt, tensioner pully, or what? Im not all that knowledgeable about cars.

check to make shure the doors are completly closed and the windows are all the way up. then check to see that the radiator cap is turned all the way shut.
next have someone that knows cars ride with you to listen,
or take it to the dealer and spend gobs of money.

possibly a vacuum leak. does it change pitch too, or just get louder?

You get it fixed from the place you bought it from