It's amazing how much we worry about our pets. They are members of our families and are a huge comfort to us. Both of my feet swelled, also, and they even peeled. They were so ugly! Every time I sat, I was elevating and icing. The first 6 weeks or so, that was quite a bit. I did the necessary things I had to do, then back down in my recliner! Work in those new exercises gradually and if they hurt you afterwards, back off of them. The pain will be telling your knee that it's not ready for it yet. Let it be your guide.