I have some burning during sex but it goes away after awhile. I don't have any weird discharge coming out or burning when i pee and my vagina isn't red itchy or swollen. Sometimes when I move around in my pants, my vagina will burn because my underwear rubs against it. I know some side effects of the nuvaring include random vaginal dryness and irritation with or without sex, but I can't tell if it's a yeast infection or birth control side effects. Can anyone help?