Hello & welcome, I am Dr. B, a licensed veterinarian and I would like to help you today.
How long has she has these signs?
Any gagging, retching, lip licking, drooling or vomiting?
Can she keep water down?
Are her gums pink or pale/white? Moist or sticky?
If you press on her belly, does she have any discomfort, tenderness, or tensing?
Could she have eaten something she should not have (ie bones, toys, rocks, plants, chemicals, etc)?
Since you noted green stool, has she had any access to pesticides, snail bait, or has she been eating grass/plants?