Sexually transmitted diseases (STDs) are generally acquired by sexual contact. The organisms that cause sexually transmitted diseases may pass from person to person in blood, semen, or vaginal and other bodily fluids. Some such infections can also be transmitted nonsexually, such as from mother to infant during pregnancy or childbirth, or through blood transfusions or shared needles.
Sexually transmitted infections (STIs) have a range of signs and symptoms. That's why they may go unnoticed until complications occur or a partner is diagnosed. Signs and symptoms that might indicate an STI include: Sores or bumps on the genitals or in the oral or rectal area, Painful or burning urination, Discharge from the penis, Unusual or odd-smelling vaginal discharge, Unusual vaginal bleeding,