My butt touched my doctors private area by accident?

I was walking past my doctor after our appointment and there's a small gap that I have to walk through. He was standing in the gap with his back facing the wall. I moved myself past him sideways so I could get through ( I don't know why he was standing there in the first place). My butt rubbed against his private area for about 2 seconds. He just stood there! He didn't even move. I said sorry and he was smiling at me. I just left his office after that. I have to see him next week but I'm scared. Do you think he got pleasure from that or maybe he didn't even notice what happened?????? I'm 16! What should I do? :(