Hi! Help me please??

Hi I'm new to <a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">Eve</a>. Was told by a friend how great it was. I'm agreeing now. Loving the app, use to never know when my period was coming or if I was ovulating. I was also wondering... About Sex. I've been told it hurts and uncomfortable, and my boyfriend and I really want to try. I'm just scared. I'm 17. I can make my own decisions, just need advice or something to help us make our/my decision.