My girls are 4 and 5 months old. One started laying last week. They were on medicated chick starter till last week and are now on layer pellets. I've had them for about 2 months. This morning, there was a pile of bloody droppings and another that looked like mostly blood. No egg today, but there was a soft shell one yesterday. I don't see blood on any of them, no one is acting unusual. I didn't get any pictures, just scooped it up and tossed it. Help?