I have a little blood blister (about the size of a dime) on the bottom of my left foot. It hurts, but not in a crippling way. I was wondering if I could continue walking on the treadmill?

I have finally gotten a blood blister on my foot. It’s in a funny place, right next to my callous. Not under or connected, but still next to it. I’ve looked all over Google but all I get is pictures that are 40 times worse than what my tiny purple spot looks like. No red streaks, when I pricked it a week ago and the blood was pure blood no pus, and it doesn’t hurt as much as it is annoying. Should I prick it again or try to let it heal (I am a picker too)?