I would first ask her the question. Even if she has a history of not telling the truth, if asked in a non-threatening way, you may get a reliable answer. Next, trust your own judgment. Initiate a discussion of teen sexual behavior and see where it goes or comment on something on TV or the news which is a similar topic and ask her opinion. Start a dialogue. Best wishes.
Wayne Yankus, MD, FAAP
expert panelist: pediatrics