Hey chicken owners i got a problem help?

Ok i got a hen that since i've had it has laid some pretty funky eggs, biggest thing is thin shells sometimes she poops them out while on roost, sometimes they are so thin they will break when she lays them lately they have been not only thin but very rough and have a wrinkled look to them now today no egg and she's out there like she's egg bound you can see her like she is trying to poop but can't i'm feeding layers pellet with plenty of water ,oyster shell, and grit,so don't even go there, if it is egg bound what can i do, what say you?