I had my 3rd knee surgery on March 26, all in 9 months.
I have received many words of wisdom and encouragement from caring and knowledgeable people on this site.
Fortunately, I had minimal pain for the first 1-2 days after surgery, but when I got home, the knee really increased in pain and swelling. My ROM bilaterally is still less than 100 degrees.
I expressed this to encourage you, and to ditto the advice, of resting plenty, along with ice, elevation,and pain meds, and trying not to expect much from the knee for many weeks or months. I have finally settled in to the likely scenario that it may take 1-2 years before I feel closer to normal.
People here are very patient, and had to remind me several times.
Too much exercise really can set you back.
Your new knee is the boss now, and rebels against any abuse. Suffering can last for days.
Everyone here has an interesting story to tell, and you can learn a lot from them.