I keep having this dream over and over again that my Ex Husband is burrying me alive, and he is happy about it I wake up not being able to breathe and light headed and dizzy. As a result of this dream (I have benn having it for 5 years) I am now afraid of enclosed spaces.

I have had sleep studies and they found me to be physically ok. What could this dream (Nightmare) Mean??

Yeah, my Ex was a man who had to control everything, the scary thing is is that I have not had contact with him in 7 years now, I was also wondering if this could be repressed anxiety from my experience with him? And Yes it does sound as if it is. Thank you now I know what I must do in order to stop these dreams.

It may also be a natural reaction to something that your body is feeling while you are asleep.  Sometimes we are so deeply sleeping that the brain thinks our body is not breathing (which can't happen), so it feels like sofocation.