Awww,, I'm sorry you are in pain and worrying. It sure sounds like you overdid it and it might not be from just your last outing.. I found it too be cumulative and it was discouraging, for sure.
I was catching up on your thread and was going to ask if you are gripping your cane handle too intensely and then you answered that question further down in your thread.. that can literally cause numbness and pain, for sure.. glad you have that figured out now.
If you find you are forgetting and returning to that death grip, you may want to consider using two canes and seeing if that eases up your wrist and hand issues.
You also asked about when to stop icing.. I iced for several months.. ice is a natural anti inflammatory and I seemed to have quite a bit of it with my right hip. It's free and plentiful, so keep at it!
I too, had lower leg pain and oh my goodness, my achilles tendon was so sore and I'm sure it was from lengthening my leg a bit. In fact, I still get soreness in my calf and foot when I walk a lot and I am now 13 and a half months post op.
Like FCBayern said above, the stem isn't going too move easily.. but the muscles and tendons can sure get grumpy..
Hopefully you are icing and resting and maybe by tomorrow evening you will feel some relief.
Take care and try not to think about how you are behind in your healing/recovery. The timeline is most usually longer than we planned on!