How long does it take?

Hi , like so many things, I think we’re all different. In my case I’d say definitely months rather than weeks. But steady improvement. A lot depends I think on the size and location of the incisions. Mine was one long incision, slightly longer than my index finger plus knuckle, as the surgeon accessed lump and nodes from this. Depth will probably also play a part. My arm mobility did improve but it was gradual. I remember finding changing into fifth gear ridiculously painful for many months, something about the angle I think. And it was my left side, which may also affect how much you notice it. 
I don’t remember a cold feeling but I do recall a weird numbness from the top of my arm down the side of my armpit, as well as a carpet burn type sensation. I also felt like there was a large stone inside my boob for a long time. 
So I think it can be a bit of a long process getting fully back to ‘normal’ and if I’m honest that side still feels a bit different 2 years on. 
Good luck with your recovery, good that you’re doing all the exercises as they really do help. I also took up Nordic walking 4 months after finishing radiotherapy. I’ve found that brilliant for helping increase mobility as well as other benefits. HFxx

I thought my arm would never improve. Keep up with the exercises and do a little each day as recommended. Bit by bit it will improve. I had about 10% use of my arm just after surgery. Now it’s about 95% but it did take time, it’s now 5 months later. Try not to be too hard on yourself. They told me I was pushing the exercises too hard and when I didn’t push so hard things got better. I guess I was in a rush. Everybody is different but listen to your body and your nurses who will advise too. Keep going, you are doing amazing!!