Chlamydia, sexually transmitted infections (STIs), Chlamydia trachomatis, vaginal, anal, oral sex, sex toys, genital fluids, burning sensation when urinating, pain during intercourse, abnormal discharge from vagina or penis, lower abdominal pain, pelvic inflammatory disease (PID), infertility in women and men, ectopic pregnancy in women. HIV/AIDS unprotected sexual activity. antibiotics prescribed by medical professional. abstain from sexual activity. follow-up testing. condoms correctly every time. get tested right away,