Your early on in your replacement. Did your surgeon do X-rays before he saw you? If hardware is okay, and you have a good physical therapist they can help. I use my therapist always for help and been so fortunate. Both surgeon and therapist did my reverse total shoulder and my TKR. I had nagging pain for 3 months with TKR but am great now. It takes a lot of work on our parts to follow a regimen given by our therapists. Give yourself time to heal. Your therapist should be able to help if all your hardware is good. Keep the faith, it does get better. After 8 weeks post op I started deep water aerobics it is great. Had TKR IN May and am working on endurance now