4 year old RIR, hasnt laid an egg in weeks that i know of. Has a large softball size firm mass on one side towards her rear. I ve bathed and massaged her. She has gotten poopy butt since her bath a few days ago. I have her seprated because other hens pecking her. Her abdomen does not feel full of fluid like the EYP cases ive read about. She has a good appeptite, pale wattles. There was a shell-less egg a few weeks ago before she went down hill, but no idea whos? Is it internal laying or something else?