My parent thinks I shouldn't go on medication because it will 'stiful my creativity'

I'm 15 in highschool, struggling everyday with an ever racing mind that refuses to shutup. I have been offically diagnosed with AD-HD and have been on the waiting list to see someone about medication for 3 years now. I recently had a discussion with.my parents about it because they are still kind off hesitent about it, when asking one them why they said that medication would stifle my creativity (I'm crazy about film and movies and get consistant A's in my film and media class). Just asking if that belief holds any merit and if I shouldn't take medication as it may get rid of the one thing getting me by in my school subjects.