I, of course, will chime in to take it easy. I had two knees done---the first one I was gung ho. after all, I had bounced back from other surgeries and I was pretty strong. I pushed and pushed. By three months, I could ride my bike outside.
With my second knee, I just laid around a lot. I NEVER did any exercises at home at all. i did the ones at outpatient pt which were mostly table stuff--leg lifts, clam shells, etc. My pt never caused me any pain and I never took a pain pill to go to pt EVER!! I think that is a bad idea as you can push your knee too far and make it swell more.
With my second knee--I rode my bike outside at 8 weeks. Lesson learned!!!
I have skied with both knees after six months. My balance is so much better with my new knees that I ski better with them than I was skiing before the surgery.
I did not do any strength training until my quad was firing on it own---I started working out more at 8 weeks. Before that, the knee needs to heal, it will not gain strength because the quad is not firing properly.
Now is a time to get some good books and lie around a lot with your knee elevated and rest until that swelling goes down. I think if you push too much and are up too much, the swelling gets entrenched and it is harder to get rid of. But, until the swelling goes, your knee will complain about too much activity, so just give in and rest for a week or two. It feels good to surrender and let the knee have its way!!!