I’ve been frequently urinating and having great pain and discomfort near my urethra. My doctor said it could be urethritis- which most of the time is caused by an std. I’ve been in a (what I think) is a monogamous relationship for two years. If I test positive for an std does that mean I was cheated on or could i have had this std for awhile without knowing? My boyfriend denies any wrong doing but I don’t know how I’d get an std in a 2 year relationship.