The ring?

So I just got my rings today. I put my first one in. But like how do you tell you have it all the way in and everything? Plus during sex will he be able to feel it or if he’s fingering me? I got the ring because my IUD slipped and they don’t want to risk putting another in. I’m new to this so I’m super curious. If anyone with the ring can help me out That would me much appreciated!