Why do i sometimes feel nauseous when i get up rapidly from a laying down position? if i open my eyes it feels like my vision is spinning. i cannot move and have to stay laying down for a while it subsides. it usually subsides in 10 minutes?

You should see your doctor to have this evaluated. It could be that your blood pressure drops or your heart rate is a problem with the change in position. Be certain to stay well hydrated. This should be evaluated by your doctor so your vital signs in different positions can be assessed and you can be examined. Further testing may be needed. Good luck!