I'm a 18 year old girl and today I noticed a small, red bump on the lip of my vagina, on the right side. I think it might be from my jeans/underwear rubbing against my vagina. But while looking on this site i got a little scared because I just had sex on the 22 and I'm thinking it could be something else. It only hurts when I touch it, its red but i do not beleive in an inside bump . Could someone please help me?