My kitten was chased up a tree by a much larger cat and i think that it has really hurt her, at the base of her tail, off to the side of her bum, she has a round wound about 1cm in diameter, and it is swollen, i thought she had broken it at first but the wound is worrying. she is being her normal crazy self, jumping around and annoying the other cat, she just wont let you pick her up, she starts squirming and winging, should i take her to the vet and is there anything else i can do in the meantime for her?