I was the same as Krypto. I regained all sensitivity in each of my nipples within a few months after surgery. It's generally kind of annoying because when the nerves start "coming back", they tingle a lot of the time and are very sensitive. It's good to wear the compression vest for about a month and a half or two months after the surgery as well. That sounds awful, but it will really help in the long run, trust me. I was very eager to rip my compression vest off, but I wish I would've kept it on longer now. It will help the results in the long run.
Other than that, take it easy for the first month.
Good luck!