I feel really silly right now!

I found out that I'm pregnant 2 days ago yet I'm still doubting whether I am or not even though 3 pregnancy tests have all said the same thing. I keep thinking that I'm going to head on up to the doctors only to get told I'm not pregnant. I'm not sure if it's to do with how long I've been wanting a child or if it's still settling into my mind. Is this normal? Because of the doubts I feel very stupid haha. Can anyone relate?