Gender Question!!

Racheal • First Time Mommaa | 17 &&&' Pregnant | Due Sept 15th | Blessed With Our BabyGirl Leiana Ann Pritchett💖👶🏽👨‍👩‍👧😍🎀
I'm about 20weeks pregnant. I have my appointment set for Monday. I've been anxious lately and was curious if it's possible I could find out my baby's gender? When do you normally find out a baby's gender?