/ic/ - Artwork/Critique

My drawing (left) hand hurts after painting for hours yesterday. I probably did over-exercise and slept on it, but it's unpleasant. It hurts under the joints of palm with fingers, like the parts that stick out when making a claw-like shape or grip. Will it go away if I won't draw today?

Anything to prevent that in the future? It's irritating as I'm painting since 3 months and only recently I got to draw daily and now not drawing feels lazy.