I had lateral release surgery on my right knee yesterdat at pm. im 16 male and have a landscaping business and?

play basketball(very active) the surgery took 10 minutes. today my knee is literally 4x the size it should be. its very hard for me to get up and move on crutches. i am in a straigh foam cast. i was wondering how long until the swelling will go down and the pain will ease up. also my foot is swollen and red. how long until i can crutch without swelling. please help