Grace, please don't feel you don't 'belong' here. You don't have to know what you think in order to be here. You just need to know that this is a place where you can find support and love, and to be OK with the fact that the way that we express that is through the language of prayer.
Like Becca, I lurked for ages before posting, and like you, I started posting before I was at all certain what I believed in. That was over 8 years ago, but it took a good while before I felt confident to do much more than just sort of stick my head above the parapet, say hello, and duck back down again. I stuck around. Other people have posted for a time and then disappeared - it's fine, there is no prerequisite for being here.
There is a prayer used sometimes after communion which always makes me go [gulp]... It starts: 'Father of all, we give you thanks and praise that when we were still far off you met us in your Son and brought us home.' That was absolutely my experience. I had thought that if I was going to reconnect with faith (I went to church as a child, but hadn't been for 25 years or so) I would have to make the first move, as it were, do something, change my life. Instead, I realised that God had come to me without me doing anything at all except to become aware of God's presence there. I did start going to church, but I started going because God had come to me, not in order to look for God... if that makes sense. And that is, I think, what God always does if we are able to see it: it's what it means for God to have become a human being and dwelt among us. God comes to us, whoever we are, and however far away we think we are.
I hope and pray that this will be your experience too, not because where you are now is in any way 'wrong', but because realising that God had come to meet me has transformed my life in the most amazing ways. But take your time, there's no pressure, and in the meantime, stick around. You don't have to pray - we've got that covered for you! - you just need to want to be here.