hi, I have a hen with swollen abdomen. it was soft. she laid eggs normally but I found 2-3 that looked like a ping-pong balls. she has not been able to walk for a few days although she gives some signs of improvement. her abdomen is hard now although does not look like egg bound. is it possible that she has an egg inside and that she laid other eggs? what else could that be? I lubricated her vent a few times but no eggs came out. she had a heavy infestation of tape worms. I gave her vermox 4-5 days ago and probably it was too strong for her condition. she collapsed but today she moved around a bit. she eats a bit and drinks water normally.