Bump hurts in the morning

Kit
30w. Some mornings lately, when I first wake up, my stomach (bump, not my actual stomach) aches to the point of being painful. Not like contractions or BH at all but more like if you sleep in the wrong position, your arm or back will just be hurting like hell when you wake up... Anyone else? I have to sleep with a wedge under my bump to be comfy but I'm thinking that sometimes it causes this. It's so inconsistent, though!