Group b strep test

Briana • 11•12•11 👶🏽💙 11•16•17 👶🏽🎀 6•7•21

What if I poop before I have todo my strep test 😭 last pregnancy i don't remember what happened bc it was almost 6 years ago but I'm almost sure I baby wiped my but and the q tip was brown 🤦🏽‍♀️🤦🏽‍♀️🤦🏽‍♀️. And also what do they do when they check your cervix. I seriously don't remember any of this stuff anymore lol help.