Hello, here is more updates.
Deckie my sick chicken is trying to lay an egg again, which she hasn't done for 3 days or so. After that, she pooped out bright greenish stuff with a lot of fluids. I forgot to take a picture... I will do it when she poops again.
And, when I took a look on her dropping under the cheap microscope, I saw a tiny old blood spot in the green poop.
Unfortunately, my husband disagree with the idea to bring her poop sample to a vet because he had a really bad experience with the avian vet when Bumpy who was a chick and sour crop to take a look for her symptoms. The vet didn't know what was, but a farmer did.
So, I have to do a guessing work now. I really appreciate if you have any idea to cure my chicken.