I have a 5 day old chick that has been acting like she's choking, stretching her neck and opening her mouth since yesterday. She is with 5 other chicks that seem to be doing fine. Her crop was enlarged so I tipped her upside down and massaged it. She threw up feed and bubbles and phlem looking stuff. I thought this would take care of it but she had a large crop this morning and continues with the neck stretching uncomfortable moves. So I massaged and tipped her upside down again and she threw up alot of the same. So this morning I isolated her and gave her water with a bit of ACV and a small dish of yogurt. She hated the yogurt and tried to get it off her beak. I have massaged her several times during the day. She did not throw anything up. I tried to squirt a bit of olive oil into her beak. I think I got some in. She has been screaming all day!!! I thought she might be sick but she has a set of lungs on her. This evening she ate the yogurt off my finger after several attempts to offer it to her. She wont eat it herself and I dont think she is drinking water. She has not pooped all day! She seems to be really hungry and stops screaming when I hand feed her yogurt and now she is gobbling it off my finger. But now her crop is huge again. What should I do? I dont know why she isnt pooping.