I agree a vet would be preferable, tell them it’s a gi stasis emergency for a bunny and they should fit you in almost immidately, if they don’t or refuse to find another vet. At this point any vet will do.
If all else fails this is your self care reccomendation, if your bunny is just pressing his tummy to the ground he might have gas.
Give your bunny a simethicone product orally – Commonly sold over-the-counter products include Infant’s Phazyme, or Infant’s Mylicon. Give 1/3 of a dropper (0.3ml) for smaller bunnies, or ½ dropper (0.5ml) for larger bunnies every 4-6 hours until your bunny appears to lay down in her normal manner, or she beings to eat again. A Gas relief product is a good thing to have on hand in your rabbit care emergency kit.
You can also if available Take care of her digestive tract and make sure she is hydrated – Chances are your bunny has not eaten because of the pain. We must make sure the good flora (bacteria) in her intestines are still present in her system. Give her some acidophilus twice a day during this episode, or one ml of Benebac. Pedialyte can be added to make a manageable liquid if you are using acidophilus in powder form to syringe the mixture directly into her mouth. Give as much as she will take, being careful to drop the liquid slowly into the side of her mouth. Do not squirt it into her mouth as she could breathe it into her lungs.
If all else fails and nothing is available Apply tummy massage – Rubbing your bunny’s tummy in a gentle manner will help to ease the pain and expedite the relief. To this gently and I’d you feel something HARD and it’s not bone it’s best to see a vet asap