Sorry to hear you are in pain …. Question have you had X-rays since surgery make sure everything ok….. at 4 weeks I was still stiff and swollen…. It took me months and a lot of myofascial release to get rid of the tightness …..I know some people recover in no time …. Unfortunately I was not on of them…. I am still going through issues after second opinion found out my knee slightly to big I am do for revision july I am anxious but can’t wait for this nightmare to be over….so first I would get X-ray make sure everything ok …..also you can use rolling pin it helps loosen things up they have them on you tube…..last you can do myofascial release that was most important key to my recovery……so good luck I hope you find relief