Painful sex, raw irritation on external parts of vagina. no pain urinating unless it is after sex. off bc pill because it made it worse. ?

Dermatitis : At your age, it's probably a contact dermatitis, where the vulvar skin is being irritated by something you're coming in contact. It's often misdiagnosed as a yeast infection. Most patients with this complaint are completely shaven, which makes it worse. http://www.drexelmedicine.org/patient-services/obstetrics-and-gynecology/vaginitis-center/about-contact-or-irritant-dermatitis-of-the-vulva/