You definitely cant tell whether someone has an STI by looking at or talking with them. In fact, most girls and about half of guys DONT get any symptoms so they dont even know that they have an STI! Symptoms for girls can include burning or pain when passing urine and unusual discharge from the vagina.

How long before a woman knows she has an STD?

Depending on the specific pathogen (disease-causing organism) symptoms of STD may appear within four to five days — or four to five weeks. Some infections might yield noticeable symptoms even months after the initial infection.

How do you know if someone has STD?

Theres no way to tell by looking if a person has an STD — even people who have STDs sometimes dont know it. If you have had sex before, you and your boyfriend can get tested together at a local health clinic like Planned Parenthood.

How would you know if a girl has chlamydia?

Chlamydia symptoms in women can include: Abnormal, yellowish, or strong smelling vaginal discharge. Swelling inside your vagina/painful sex. Pain or burning when you pee.

How soon can Std be detected?

Most tests can detect the infection within 5 days to 2 weeks of exposure. If a test is negative shortly after exposure, a doctor may recommend retesting 2 weeks later, particularly if a person has symptoms.