ken'd

recently everytime i shift gears in my car the shifter would jerk up and down as soon as i put it in gear when i let go off the clutch, it does this in every gear but first, i also notice it does the same thing while its in gear when i give it gas.....is this a sign of the tranny going bad cuz it feels like it wants to pop out......any input to what you think it is.....thanks in advance