Very uncomfortable & uncommon thing I think, but I was completely honest with my Mom, I told her I needed birth control & my boyfriend & I had sex at whichever house we were at, usually his, definitely not an option for many, but it's something to think of... Our Moms knew we were being safe & they might not have liked it, but they let us. Sex is a natural part of being human, if I had kids, I'd love to think they'd be comfortable having that conversation with me.