For the past four nights when I lay down to go to sleep at some point I get dizzy and my head spins and feels like my brain is sloshing around.  Last night the same thing but I was burning up and got a cold sweat and felt some what short of breath.  I had to sit up in a chair for 3 hours before I felt better.
Hello! Welcome on Chat Doctor ! Your symptoms could be related to a sinus infection or an inner ear disorder. Do you have any cough during sleep? A cardiac disorder could mimic such clinical scenario. For this reason, if the problem persists, I would recommend consulting with your physician for a physical check up and some tests