2008 g37s not shifting

so my car was driving fine shift into all gears without hesitation but then i
stopped at a red light and the car wouldnt move i tried pressing on the gas
and it just revved up. it moved a little when i revved it all the way to the red so
i got it towed home the next day tried driving it i turn it on put it in drive and it
worked it moved likea normal car when put it in drive but then for a few
second  when i pressed the gas it just revved up and dosent go just works
when i turn off the car and turn it back on ill drive but then for few seconds it
stops moving and wont go i check trans fluid its good