Sounds like she may have gas. It sounds like she is still pooping, which is good, but you will want to treat for gas.
The typical protocol for gas is to give a drug containing simethicone (and only simethicone). This can be found as a liquid gas drop made for babies, or as a pill for adults. Brands in the US include Gas-X, Phazyme, Mylicon, and store brands. She will need approx 1mL for a dose if you have the liquid, and 1/2-1 tablet. I have not used the capsules--the tablets though work well as many bunnies like the taste of the cherry-flavored ones. Doses should be given hourly for 3 hrs, and that should improve things.
It sounds like she is also in pain because of the tooth grinding. If you have any pain medication prescribed for her, perhaps when she was spayed (?), that would be good to give. You can also give ibuprofen or aspirin. Children's liquid versions are fine, and you can also grind up tablets and suspend them in liquid to give. They usually won't eat tablets of pain medicine because they are not good tasting. Do not give tylenol. Dosing info can be found here:
http://homepage.mac.com/mattocks/morfz/rx/drugcalc.html
I would give her one dose with the first dose of simethicone. A few mL (~5) of water or pedialyte (infant rehydration drink, also called dioralyte, do not use gatorade or similar) would also help. You can also do gentle tummy massages and offer a heat source, like a heating pad, hot water bottle or rice sock (old sock full of dry rice, microwaved for 1-2 min).
A final thing that can help but is often hard to find overseas is a probiotic. Here we have Bene-Bac and ProBios available. Sometimes you can find acidophilus capsules at a human pharmacy--those can be opened up and force fed in water, like the ground up pills.
Critical Care contains probiotics as well, so if you can get that and get 1mL or ore of that into her without causing too much stress, that would be great. Make sure it is reconstituted well--use more water than the package describes.
I would hold off on the carrot juice since she is still drinking. The infant rehydration drink is a better option than carrot juice, as carrot juice contains a lot of sugar. If you can find canned pumpkin or squash baby food, that is a good food for bunnies in this situation.
The question remains to why she got gas in the first place. Gas is caused by bad bacteria in the GI tract. If the gut slows down for any reason, the bad bacteria can produce gas. Stress, food change, or wrong food can cause this. Is she still eating hay? The stress of adapting to a new environment could have caused it, or the bag of pellets you are feeding may have gone bad--check for expiration dates. I would have expected a more sudden gas episode though if it were due to adapting to your home.
ray:
