I was assembling an elliptical orbiter and I was tightening some screws while another person held the arm over me.
The person lost their grip, and the metal arm crashed into my shoulder, right at the joint where the shoulder and neck meet.
My shoulder was dislocated. Dumbass ME ignored the pain and kept working...
I was wearing some shoes and my socks decided that they'd fall down (so my ankles were rubbing against the shoe). Since I was in a rush I couldn't fix them, so wit every step I took my shoe was rubbing against my ankle. Obviously I ended up with a blister.
Anyway fast forward a few days (2 days ago) and the blister was almost gone, but silly me totally forgot about it and put on some shoes….. Without socks. After a couple of steps that little bister that had almost gone turned into a some-what significantly larger, much more painful sore.
It is starting to heal up again now though, and I'm making sure that I've plastered band-aids all over it when I do wear shoes so I don't make it worse again.
Tl;dr: Got a blister, started to heal. Made it worse thanks to my forgetfulness.