(1) It is very important thing to find general STDs, such as chlamydia infection in the early stage, because this can stop the spread of HIV/AIDS. (2) If patients are suffering from vaginal discharge, bleeding, lower abdominal pain, and/or urinary symptoms, we highly recommend that they need to take STD tests. (3) If some one whose first experiences of sexual intercourse were under 14, their behavior may have been related with their home environment. We have to know their problems at home. (4) Self-esteem is the basic factor for performing dual protection.