Could it be a tic?
In tourettes syndrome there is very often
a constant need to clear the throat.
I'm not exactly sure what you mean by pinching sensation in the throat. Would need more information on the type of infection, what it involved, etc... But sounds more like chronic throat irritation than a primary nerve problem. There are certain neurological disorders that are characterized by sensory changes in the throat, but these are typically very painful and not just tickling. If the problem continues to bother you, consider an ENT specialist who can look down the throat with a scope to see if there is any damage or changes in the lining. Good luck.