I tore my MCL last week and the ER doctor told me to stay off of it for at least three days. I did so, starting to use it three days later for about three hours. The swelling my foot has encountered since then has been extreme. If I elevate and do not use it for four to six hours, the swelling recedes, but if I use it at all, my foot and ankle puff back up. I have been elevating it, icing it, and trying to stay off of it. What should I do? Should I go back to the ER?