Does it hurt to have a dental filling?

Well I'm 10 and five days ago I got two cavities filled on the right side of my mouth. iT WAS THE EASIEST THING EVER!!! The only thing I was afraid of was getting the novacain shot, and I shouldn't have been. Before your dentist gives you the injection, ask him to put a little bit of numbing cream or gel, on your gum. When he actually gives you the shot, you WILL NOT FEEL A THING!!! The only thing you will feel is a little bit of water on your mouth.... The only thing that may be a little achey is keepin your mouth open while the dentist "drills" Ps. It's not actually a drill, it's a little tube that blows really strong air and cold water onto your teeth... The only thing to watch out for would be not to eat for a little bit after you get it filled. It's not bad for your tooth, it's just that you might bite your lip REALLY hard and not notice it ( I did it a million times and now my mouth still really hurts) GOOD LUCK. :)