HI, I have a 4year old TB mare, and last night when I fed her around 10 she was fine, and this morning when I went to feed her i notcied both of her back legs were swollen.. There were no cutes, scrapes, or bites that I can see. But both of her back legs only are swollen all the way down to her hoof, and there is alot of heat comming off them. I have cold hosed her legs, polticed, and wraped them. what else should i do, and what could be wrong with her?