Sexually transmitted diseases (STDs) or sexually transmitted infections (STIs) are caused by infections that you get when you've had sex without a condom. This section will break down what the different types are and what the symptoms are.
Genital herpes is an STD caused by 2 different types of herpes simplex virus (HSV). It looks like a cold sore or blister. While the virus is highly contagious, most people who have it don't get the cold sores or blisters.
Chlamydia is an STD caused by bacteria called Chlamydia trachomatis.
Chlamydia can infect your urethra (the tube that leads from your bladder to where your pee comes out), vagina/cervix area, anus, or eyes.