Hi everyone sorry took so long to reply.
Cindy, yes the dropping color was kind of watery with some green color. I fed my zebbies for veggies daily beside seeds, she loved Romane lettuce so much. I did put lamp over the cage but she was frightened and fly hard in the cage so I took it away. Now she seems fine so far not shake head yet and went to sleep by got in her nest.
Debbie, the nest smell I guess because since there were some eggs inside for few weeks, which I didn't clean the nest for her that long
and maybe there were some infection since old eggs inside? Maybe that passed to her and make her feel sick like? And also she took bath daly 1-2times, liked stand on top of her nest edges to clean/
dry her body and feather, so perhaps make the eggs and dried-dropping became contaminated, while she sleep in there every single night
I didn't clean her nest for few weeks, and today I did cleaned it by soak in hot water and wiped it dry. It looks kind of messy with dried dropping kinda smell too before clean it. Hope not because the yeast infection from the nest tho.
I will keep watched these days even she is getting better.