I've done mine a couple of times, severity varies a lot… I did 2 of the lower ones and it was pure murder, because they move so much and they're not as supported. 6 weeks of misery, pretty much. But this year I did one higher up and it wasn't suxh a big deal, I had trouble getting my full breath and it was painful but nothing like as bad, I was back doing light rides after a week. Healed faster too,
With briken bones, movement isn't always a bad thing, both times I was advised to keep moving, take deep breaths etc, to help them heal (heal well as opposed to heal fast) same with my hip, I wasn't allowed to unweight it, I had to put a little weight on to bed it in.
People always say "If you've broken it you'll know", but that's total balls 😉 Especially with ribs where doing the soft tissue in can be every bit as bad.