8 days ago my hen had an egg burst inside of her. I immediately started powder antibiotics. She's been in a separate coop and on the medicated water since. She eats and drinks fine but today she passed a soft egg which was more like a deflated sack. I don't know what to do for her. Is the soft egg a sign of infection? The medicine I have her on is Oxytetracycline. What else should I do for her? Thank you.