This is a prime example of cause and effect. It sounds like your pt really inflamed your knee and it's reacting with extra swelling and pain. I iced and elevated the whole time I was sitting and in bed as long as I was swelling. I suggest you stop all exercises except for your normal daily living activities until your knee calms down. If you continue to exercise it, it will continue to swell. It isn't out of shape, it's wounded and still needs lot of healing and TLC. You newborn knee is barely a month old and is 1/12 of the way healed. Increase your icing and elevating and that should bring down your swelling.Wondering what do about swelling. It’s been 3 days of extreme swelling of my entire surgery leg. So much so it is hard to walk, aches, and very warm. I’ve elevated, iced every 2 hours, walked and done some simple exercises. I’m so frustrated! It started after a PT session where my ROM went to 121. I was very excited, but just a few hours later this swelling started. (5 weeks)