I Fell Asleep At My Desk While Studying On Night

I fell asleep at my desk while studying on night with my left hand in my pocket when I woke up my hand was feeling bruised as though I had cut off the circulation. Although it doesn't look bruised I can't pick anything up with my left hand now as parts of my hand, particularly my middle finger has the worst sensation of a bruise. It makes me jump and yell ( normally I am quiet when in pain). Today I picked up a getting pan with the opposite hand and nearly dropped it as my right index finger now feels badly bruised. Any ideas?