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From next time kindly mention your name and age first for better assessment and advices. I want to tell you that you need not to worry about swelling. It is very normal post operative complication that can be cured easily. Just you do some slow movement of the affected leg while lying straight on bed and do some hot fomentation. When you go to sleep just put one big pillow under your affected leg and place your leg in inclined position.
For best results go for Physiotherapy
or if you are unable to walk then call a Physio to your home for more practical treatment. For more information you can directly talk to me on 9818917550.