Sorry this happened to you. I did this about 3 years ago after using a rotary cutter for nearly 25 years. I had to get 8 stitches. It was sensitive for a while to some things but I also lost some feeling. Most of it is back now and unless you look closely at my finger you would never know it happened.
My entire skin flap did reattach. Mine was big and deep, though. Are you up to date on your tetnus shots?
It will get better. Just sticks out like a sore thumb! Sorry....couldn't resist. But it does. You find that your bump that hand far more than you ever realized.