Join Date: Nov 2010
Location: Ontario, Canada
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Hi Allie and welcome to the forum.
With regard to cortisone, in my experience, personally and professionally, a cortisone shot has almost immediate effect (within a few minutes generally). This is of course in humans, though I would think it should not be any different for dogs since it is the same medication given for the same reason. Did they take any x-rays to make sure nothing was broken? If she is no better in the morning I would call the vet and see what they say and perhaps get x-rays done. In the meantime, if it is an inflammation thing, putting alternating cold and hot packs on her may help somewhat. Cold will reduce any swelling and the heat will help the inflammation and draw blood to the area to promote healing. 10-15 minutes each, alternating, make sure to have a layer of something between the dog and the ice and heat pack; I generally use a thin tea towel myself I find works well. If you don't have a Magic Bag or other heatable, just put warm tap water into a bottle should do the trick.
Let us know what happens tomorrow please.