I hurt my neck wrestling on monday night and my left arm muscles feel weak and my left thumb is sore. its been like 3 days. i can move my arm though?

See doctor: Neck injury with associated arm weakness especially if it involves the hand can be a serious injury. It suggests the possibility of a nerve root injury at the neck level. This could be related to a herniated disc, an irritated nerve root, or just a neck strain with associated muscle spasms resulting in nerve pain. Regardless, you need to see a doctor before you are cleared to wrestle again.