I have a 14 mo hen who has laid intermittent soft shell eggs over the last several months. She has had a couple bouts of coccidiosis as well as pendulous crop. Today she had an egg break inside her. I have flushed her vent several times and she has had egg yolk flush out but no shell. I'm not sure if the shell is still in her vent I can't feel anything but she was outside with her flock and I didn't find the shell outside either.. my question is. I have Tylan 50 injectable, oxytetracycline powder, tylo-dox special mix powder, and denagard liquid what would be the best option for treating to prevent infection?