I was also doing FM when I got too close to the hopping foot & bam! the needle went thru the middle of my index finger nail.Didn't come out the bottom.....so I turned the wheel & brought needle up & out. Then it started hurting.Used antibiotic cream & by eve, it was barely hurting.Next day I washed it,cream, then wrapped it good.
It healed fine, but made me respect that hopping foot! :-(