Smoked kush for first time yesterdsy. is this normal?

So I celebrated my first 4-20 and smoked some strong stuff. For hours I felt like I was floating when I was walking and everything was.just messed up. This morning and currently now still I feel a little foggy. Head is stuffed and stomach hurts still. Is this normal? I'm not a pothead and don't smoke a lot. And when should this feeling go away?