Sounds like RBB- REM sleep behavior disorder. In a person with REM sleep behavior disorder (RBD), the paralysis that normally occurs during REM sleep is incomplete or absent, allowing the person to "act out" his or her dreams. RBD is characterized by the acting out of dreams that are vivid, intense, and violent. Dream-enacting behaviors include talking, yelling, punching, kicking, sitting, jumping from bed, arm flailing, and grabbing.
I'd schedule an appointment with your doctor ASAP. He/she will probably send you to a sleep center for a sleep study. You'll spend the night at the facility while hooked up to wires that will monitor you sleep patterns.
Medication is supposed to help or fully eliminate your problem so don't suffer from this needlessly.