If i have an std how do i know what it is?

Test: Testing will identify which std you have. Chlamdia may be a possibility.

Get tested: Some std's have symptoms such as burning with urination, penile or vaginal discharge, skin ulceration, and even more serious ones depending on what it is and how advanced, etc. Some however may have no symptoms. Depending on the patient exposure and risk factors, the doctor would know what to ask, look for on on exam and what labs to order. Urine and blood test are needed to confirm.