I ran on Friday (I run 6-7 days a week). When I woke up on Saturday, my knee was swollen but not soar. By Sunday afternoon, it was very swollen. I iced it, but woke up today with continued swelling. If I ice it consistently, the swelling goes down. 30 minutes without ice, and it swells again. I am able to walk without pain, but the joint feels stiff (from swelling).