Everyone's a little different, but a good buddy who's no cream-puff lost a top knuckle's worth in a shop accident and after surgery it was almost a year before things normalized.
Pain. Nerve damage. Periodic wound site reopening.
Not trying to make for outsized fear -- it appeared livable, and smoothed out eventually, but didn't look like a walk in the park for such a seemingly little thing as part of a digit; bone and nerve pain ain't no joke.
Best to you...
Yes, that was my experience, as well. I had a construction accident when I was in college, and crushed the end of my ring finger. Looked down and saw the bare bone broken and a lump of meat dangling by a thread. It was a Friday afternoon, and I had a first date with a pretty girl that night. My first thought was, "wow, I hope I can stop this bleeding, I've got that date with Jill tonight..." True story.
Anyway, they gave me the option of reconstructing the finger, or amputating at the first knuckle. I chose the surgery to remake the finger tip, as I didn't want to give up my dreams of being an A-list hand model. Actually had to spend the weekend in the hospital, because it was a dirty crush wound, and they had to put me on antibiotics, and periodically clean and irrigate the crushed finger. Holy God, that hurt!!
A plastic surgeon had to splint the bone pieces together and re-form the finger tip (was a meat lump) and re-make a nail bed. I watched him do it under a local anesthetic; gross, but pretty cool. He thought I was nuts for wanting to watch him do it, but I wanted to make sure he was doing right...
Anyway, that finger was swollen to 3x size for a couple/few weeks. I had the hand in a cast/splint for about a month, and finger in a splint for a few weeks after that.
I'm very pain tolerant, but I have to say, that puppy hurt bad. And it hurt bad for a long time. I remember having to keep the hand elevated for a long time, because if I had my hand/arm lowered, the blood flow into the finger hurt, a lot.
The real bad pain was better after a month, or so, but the finger bothered me a lot in the first year, and even years after. The lingering stuff was nerve related; pain, tingling/throbbing, sensitivity. Things like catching a ball on my finger tip would hurt like hell for years after. The end of my finger would be very sensitive (ache) to cold for years after, and stillis is a little. And the finger would swell when it gets hot. Wearing my wedding ring could/can cause some throbbing.
OP, I'm not sure if you injured the finger tip and it needs to go, or if it's some other medical related amputation. I would think a straight surgical amputation would not carry as much pain and lingering issues...? Finger tips have a lot of nerves, and I had a crush wound, not a slice wound.
Good luck with it, I'm sure your doc can walk you through what to expect with your particular situation.