It's not on the same level, but I get very nervous about having dental work done. What helps me is to focus my attention on a spot just below my navel, and listen to my breathing without trying to control it. This helps from when I'm waiting room right through until it's over. Might help before a procedure too, to deal with the anticipation. 

 Oooo yay a new friend! Hi🫂 

Thanks you! I wanted to zap you, but you don’t have a lightning address?