Take it to get for assessment for either X-ray or pad problems, and also for some fluids and maybe a force feeding tube.
My dog came in limping late Sunday evening and would whine if you touched his leg. Called pet ER and was advised to give him Benadryl. He is now walking around when outside, but has not eaten or drank any water since late Sunday. Any ideas?
I'd have my dog to the Vets with those symptoms. Could be a broken leg/ broken hip, serious bee sting.