First time sex

buse
I was wondering if a small red rash (just a rash no bump or anything) kind of thing is normal to get in you labia minora after your first time sex, and also to include the fact for some reason I feel like my discharge is a little different, I dont have any pain, or odd symptoms, I'm still going to get checked by a doctor but I'm kind of worried and was wondering if it's abnormal to get these!!