Nov. of 2011, I had unprotected sex and felt a burning sensation in the
vaginal opening 2 days after. Since then (going on 10 weeks now) I've had an intermittent but persistent on and off burning sensation, not when urinating, no discharge, no blisters/patches, no itching, redness, or any other symptoms other than burning. Was examined and tested for other STDs and vaginal yeast/bacteria, UTI - all negative. The Obgyn couldn't see anything unusual.