I experienced what I would call regret, rather than anxiety, but it didn't last long. As soon as I was able to recognize that I was getting better, stronger, and no longer getting weaker and less able to participate in things, the feeling went away. I still experienced some frustration! A lot of people are posting on this site because they have had some problem with recovery. I moved into a 55+ community about a year before my TKR, and I'm not sure if I've met anyone who hasn't had a TKR on one, if not both knees, and none of them regret it! In warm weather, everyone walks around in shorts and the scars are faint, but visible. Most get around very well. Even those who complain seem to be thinking about "younger days," and walking around just fine. I'm assuming you were physically struggling quite a bit before the TKR. Seven weeks isn't very far out. I'm about 15-months out. I have had set backs and struggles, but I know I'd be a mess if I hadn't had the surgery. Close your eyes and imagine how great it will be to get past this! Focus on any bit of improvement. It takes time, but it is so worth the effort! You have already done the hardest part!