how do you know?

So

how do you know when you have dropped/or baby has turned? my doc mentioned when he turned my hips may hurt less during sleep. (I've had some pretty uncomfortable hip pain) and the past 2 days I haven't had any hip pain during sleep!! But my ribs are starting to hurt and lower back. So I'm just wondering if those are signs of the baby moving positions? It seems like I still feel movements in my sides though.