I get the sudden nausea too. I remember getting it when I was very young in school, felt like I'd get ill, then it'd subside. Perhaps it was panic. I get it every once in a while now as an adult, usually in the morning...... I don't like it one bit.
I don't get the big space tilting feeling.
I think my emet gets worse in the fall, in anticipation of "sick season" or after any event like someone at work is ill or in my family or I hear of an outbreak, then I'm in constant worry mode. It stays like that pretty much til spring.
How about you?
In memory of the sweetest german shepherd I ever had the pleasure of knowing. I love you, Duncan. 3/12/02 - 12/19/11