You can never go wrong with BACH'S Rescue Remedy. It works great for such. It helps correct the dogs energy and the dog can relax and not be stressed which reduces pain(very short verion of explanation). Anyway that works great for me in situations like you describe. Also might gently rub the paws(pads and all), "ankles" and ears-oodles of good accupressure points there. You can also stimulate the "aspirin point" on the hind leg which reduces pain and the point right between the eyes on their bridge relaxes them too. You might be able to see illustration of the aspirin point on the web somewhere. Hope your Baby feels better soon!