With all that "repair work" it could probably be anything, and I think it's really important that you call your doctor and report the symptoms immediately.
Numbness can sometimes occur if nerves are affected, but you've just had too much work done not to immediately call your doctor.
Again, any number of things could be causing it, but here's a link about the symptoms of a blood clot and of infection:
I'm not suggesting that's what's causing your pain (because I'm not the least bit qualified to even guess, and neither is anyone else on here). Who knows... It could be something related to something going wrong with the "metal work" or to the whole area healing. On the other hand, I don't think you should take any chances. Things like infections can happen. Besides, if something happened with any of that "repair work", if it isn't addressed there's the chance you can have new injury from it.
With all that work to heal from, maybe it's normal; so you shouldn't panic. Still, again, I don't think you ought to take any chances by not asking a doctor about it.