I wouldn't worry. i had a dream that I went to a doctor and he checked my mouth and I had weed growing out of my teeth, like the calyxes that had the pistils coming out. Really blooming in my mouth. So he asked if I was a pothead and I said "well, yeah" and he gave me a medical mj card. But I couldn't afford the $40 fee. It was a good dream.

You should call them and ask "are you going to get me stoned for this procedure or should I do it myself before coming in?"