I had all four of mine out when I was 17. None of them had broke through the skin. I have a bad reaction to being put under so I was sick the first day.
But I know many people who had no problems at all. In fact, one person went out and had a steak dinner the next night. (not that I suggest something like that, just making a point)
So it is something you'll just have to play by ear. I hope you are well enough to visit your friend.