I don't know if you can see from the picture but there's a big bruise in the middle of my hand.
I think I know what it's from. I was playing with a kitten and he was play biting my hand. He wasn't aggressive and it wasn't sore. I had no pain in my hand from his playfulness. Now my hand is bruised.
Is this something to be worried about? The bruise is there about a day.