Hi Sleepmonger,
That's exactly how I was when I was emetophobic. At this point in my life, 5 years after successful treatment, if the stress in my life goes up (like when I was in hospital) the first thing I think of is whether someone would be sick near me/around me. Then I remind myself that I'm not afraid of that anymore...

But when I was, it was absolutely terrible. I was petrified the whole time unless I was completely alone in my house.

I wish you well. Good luck with getting through this. Remember there is good treatment available.