Don't know how to handle life.

Emma
16 and wanting to move out, as I don't fit in with my family. I live in Australia. My mum thinks I don't do anything. When I stay at my boyfriends house we sleep in the same bed. But when he stays at my house we have to sleep in seperate beds. 
My boyfriend and I recently started having sex (protected). But I'm wanting to get the pill. But I'm not at all close with my mum and I don't talk about that kind of stuff with mum and we don't talk about periods. 
She he no idea I have sex or do anything. My boyfriend on the other is really open to his mum and talks about sex and everything. And I just want to move out but I feel like I'm not old enough but I just don't want to stay here anymore...