well, I can't tell you not to panic, because if I were in your place, I'd be panicking, BUT! I am able to look at this as a outsider, and I agree it sounds just like a muscle strain. I was watching Molly hop along on three legs (broken toe) and thinking what a strain it must be for her other legs, and really, the rest of her body. It must be much harder for Polli
edited to add, if i had to deal with your weather, I wouldn't want to go for a walk either