The needles that I use are 31g by 5mm and they are the smallest needles that I have found for the injection pens. You are right about the hurting less than the finger prick, that currently is the worst part for me too. I have heard that some company makes a finger prick (drum type) unit that is suppose to be less painful, since the needle is considerably smaller than the standard type. Good luck, I wish you both well.
