Is it popping just at the edge of the ceiling? I'm a little concerned if you can see it more each day. Have you checked to see if there is a leak?
It isn't going to be an easy fix regardless of a leak or not. It may be just a poor drywall job. I would redo the bad spots by taking the loose tape down and re-taping and mudding and re-applying the texture. There is a product that has the cottage cheese texture in a can that can be sprayed. If you have some more details that would be helpful. Good Luck