Ouch! Been there, done that. Swamp, the bruised area appears to be low on your forearm. If so, that tends to indicate that your bow arm is over-extended or your grip was wrong, or both.

I do not advocate the cocked bow arm. I know that this particular method cropped up sometime in the last several years, but never made sense to me. Having a bent arm makes for an unstable bow arm, puts stress on the arm/grip to maintain the bent arm against the force of a heavy draw, and the shooter will have the tendency to throw the bow forward upon release.