Ice, Ice, Ice. I had bilateral knee replacement. Started PT within 3 days. Yes swelling but it takes time. Was back at work 8 weeks after surgery. Dr said it will take a year to fully recover. At 9 months I awoke to no pain, didn't feel like I had something in my leg. All felt normal. 2 years later, broke my pella. DON'T do that! Worse than bilateral replacement ever could be. Just remember you have to give it time and do your PT! and again, ICE. And stay ahead of the pain with your meds. Don't wait until you hurt. Take as directed.