If you have sex — oral, anal or vaginal intercourse and genital touching — you can get an STD, also called a sexually transmitted infection (STI). STD symptoms are not always obvious. If you think you might have an STD, you should talk to your doctor. Before you visit the doctor, you can look out for these symptoms of common STDs.

Chlamydia

  • Painful urination
  • Lower abdominal pain
  • Vaginal discharge in women
  • Discharge from the penis in men
  • Pain during sexual intercourse in women
  • Bleeding between periods in women
  • Testicular pain in men

Gonorrhea

  • Thick, cloudy or bloody discharge from the penis or vagina
  • Pain or burning sensation when urinating
  • Heavy menstrual bleeding or bleeding between periods
  • Painful, swollen testicles
  • Painful bowel movements
  • Anal itching