Dizzy spells not the room spinning but I'm swaying staggering. Not dizzy laying down. Alway accompanied by sudden frequent urination. Last few hours?

Orthostasis. This is a phenomenon called orthostasis. It is very common and usually related to blood volume status. The reason you are having this is the unclear part and what a doctor can help you with. When lying flat the body produces more urine which will worsen your symptoms Try doing 5 toe raises when you feel the symptoms to raise your blood pressure and put 3 pillows behind your head when you lie.