My son grabbed my hand and jumped off the bed pulling my arm behind me and toward the ground. i have pain in my shoulder and down my arm w/instability?

Dislocation: Wow what a reversal. Most of the time parents yank on their child's arm and dislocate their elbow. Your description fits a dislocated shoulder and you need to go to the ER to have it put back in place. If you want a home remedy try lying face down on the table and dangle you arm off the side while holding 5-10 pound weight. Relax and the dislocation may resolve. See the doc anyway.