I've been in a relationship for 15 years and I believe we have both been faithful.
After sex 4 days ago I thought my vagina may have just been sore the next day but the last few days it has become extremely sore. I assumed it was a cut from sex..but I have noticed redness and a white small smooth spot in the top of the vaginal opening. It hurts to touch it and when I urinate it stings. Only one spot and I've never had anything like this before.