We are new to chickin rearin'. Our chickens are 7 months old and started laying about 2 months ago. This week we found an egg in it with quite a bit of blood IN it. A scary amount of blood. We had a rooster (accidentally) but we took him away 3 months ago, so it can't be that the egg was fertilized. Why would there be a large amount of blood INSIDE the egg? Any ideas??? Tks.