I am new to chickens and fresh eggs. Never to my knowledge had a fresh egg and was very much looking forward to the experience when my neighbor brought me a dozen. They had been in my refrigerator for a week and I started to use them today, and all are bad. Dark orange yolks, and mold inside the shell. My question is does this happen often? I have 13 wk old hens, and once they start laying I was going to give extras to my husband's coworkers, but now I'm concerned. Don't want them to have the same experience I just had. Total newbie and any information/advice would be a huge help. Thanks!