[ Adolescent ] Open Question : Is it save to have sex now?

Before you read this, you should know that my girlfriend (16) and I (turning 17) are legally alowed to have sex in the Netherlands. Just recently I got tested on STD's and was found negative on all sorts of diseases. My girlfriend is going to use the pill in three weeks from now. She is a virgin, and I know: many girls say this. But it's true, I actually am her first boyfriend. Now here's my question: Is it safe for us (and how long after my girlfriend starts using the pill is it safe) to have unprotected sex, meaning : me not using a condom. Thank you very much !

Source: http://answers.yahoo.com/question/index?qid=20110621025854AAmrBdG

Justin Timberlake Halle Berry Jennifer Lopez