Which injection did he/she prescribed to you?
How it was injected?
Did you administer that drug via injection first time in life or has you get it administered for myriad of times?
As per as I perceived it may be due to neuropathy (adverse effect of some drugs) bit if you haven’t experienced same before even after administering same drug via same route then it might be due to some sort of interaction either between drug or food or body ailment