Wisom AND extra teeth taken out?

Okayy, im SUPER worriedd about gettingg my wisdomm teethh andd three extra teethh I have growingg insidee of my mouthh takenn out. I just got donee withh braces andd well..the Orthodontist took onee lastt X ray andd seen 3 extra teethh. So noww thosee have to be surgecially removedd. I have hadd teethh pulled beforee, but nothingg like thiss. I amm MAJORLY afraidd of needless. Can someonee withh experience pleasee tell me what all theyy do...I havee seen videos and everythinggg andd im really worried. And about the afterr affectss.