rib pain

I'm 34 weeks tomorrow(if that matters) but over the past week my son has been getting into my ribs a lot. But on my left side there's one rib bone that is definitely sticking far out. And when I touch it with a little pressure it feels bruised. It constantly hurts but it's not horrible but it still hurts and uncomfortable. I'm not sure if that's like normal or if it's out of place or what. And what can I do about it?