In desperate need of help

It's 1am and I have discovered an issue. My gf is sleeping over at my house and like mentally I feel chill about her, but being around her makes my body flip out and I get really really really bad anxiety. Like I become paralyzed all of a sudden, throw up randomly, my organs aren't having a party RN, I'm shaky, and I'm holding back an anxiety attack, barely. I really really really like her, but my body isn't having any of it. Idk wtf to do and I can't ask for help from my mom because she doesn't even know I'm in a relationship, let alone with a girl, sleeping at my house, and who was my best friend. I've kinda put myself in a pickle. I've never done this relationship thing before is this normal??? Cuz I haven't heard anything about just vomiting because your in the general vicinity of your SO and I'm low key panicked.