I think it's from hitting the heavy bag with my jab. Probably a nerve problem? I haven't got it checked out yet. I've felt the very slight numbness for 1 month, maybe a bit longer. Could be from applying wraps poorly as well. Has this happened to anyone?
I had a point in my training where I was hurting my little finger, the second joint down. I started punching with my top knuckles and bought new gloves, no problem since.