I just got my first egg today. I'm not sure which chicken it came from. I have one chicken in mind out of 15 that laid that egg. The reason this chicken is the one that laid the egg is because the chicken has a mean look and is throwing up. If anyone knows what's wrong with my chicken please let me know.
You are comparing morning sickness and pregnancy to your chicken laying her first egg. I very much don't think your sick chicken was the one that laid the egg. I may be wrong.
I hope your sick chicken recovers soon. You may want to isolate her so whatever she may have does not get spread to the rest.
WISHING YOU BEST
AND
