worried about drinking alcohol for my 21st birthday

i turn 21 in a few days and i’m wanting to drink for the first time. i’m extremely scared that im going to v* if i drink at all. im not planning on getting drunk but im still worried i’ll get sick anyways. does anyone have any advice/tips on how to, 1. not v* while drinking, or 2. not worry as much about drinking. seriously any advice is really appreciated. i dont want my birthday to be ruined

edit: thank you sm to everyone who has responded, yall have made me feel much better🥹 for those who assured me there’s no pressure to drink, i really appreciate it. i do want to and its fully my choice :)) im going to a dive and have already picked out what food im going to have with my drink! this phobia ruins a lot, but not my bday!!!!