Get Your Dog Care Questions Answered by Experts
Hello and thank you for using this site to help you. There is cause for concern if a dog vomits food back up immediately and if they are an eater of non food items.
What you have to worry about is is one of those items has not caused a full or partial blockage of the intestines which will not allow food to pass through.
The only way to know this is to have an x ray done. If there is a partial blockage then surgery will be needed.
Drooling is a symptom of nausea and the fact that hi gets up and down says there may be discomfort in the belly.
Weakness could be due to the vomiting.
IF this is clumping cat litter all the more worrisome for an obstruction.
Here is more on obstruction.
Here is another link to partial or full obstruction http://www.petmd.com/dog/conditions/digestive/c_multi_gastrointestinal_obstruction
To be sure take her vitals, gum color, capillary refill time, and temperature. I will direct you to a link on how to do this. If any of it is off then see a Vet.
Also because of the vomiting try to rub a little pancake syrup on the gums to keep the blood sugar up and use an eye dropper or spoon and just dribble some water between the cheek and gums so she gets some hydration.
What is Normal in dogs