Learn how to prepare for your teen’s first OB/GYN appointment Your teen's first OB/GYN appointment is a key step in making sure they are safe and healthy as they enter adulthood. It is crucial to not only prepare yourself as a parent, but to prepare your teen for what they should expect. Your teen should consider seeing an OB/GYN for the first time as soon as they become sexually active, at the age of 21 for a pap smear for cervical cancer, or whenever they feel they have a concern or issue that ...