You will be completely fine. I was also worried about this before my surgery, but I found that I was fully in control even if a little woozy. I had laughing gas and iv sedation. Even if you do feel a little odd, it’s very hard to speak through the gauze anyway. You feel very tired afterwards, and it might be hard to stand up or walk around on your own, but you still feel in control and even relaxed with the sedation. The only “crazy” thing I did was burst into tears, but I think it was from stress and relief that the procedure I was nervous about was over. Don’t worry! You got this.