Those small needles are like pins on the ends, and they HURT! I've never broken the skin with them, but I have had my right index finger get so sore that I couldn't knit comfortably for awhile. I tried using a bandaid as a pad, but that didn't really help the soreness. I had to use my middle finger for awhile until the soreness went away. It was awkward, but effective.
I try now not to use my forefinger so much. I slide the stiches off with my thumb when I can.
I hope you heal soon!