Re: Emetophobia and sexual abuse
Welcome to the site. I hope you find it to be a comfortable place where you can air your thoughts and fears amonst others who can understand the fear you live with 
That said, I was sexually abused when I was around 9 years old. I don't think that had much bearing on my emetophobia as I've been phobic since around 6 or 7, well before any type of abuse occurred.
Jennifer
“The mind is its own place, and in itself can make a heaven of hell, a hell of heaven..”
― John Milton, Paradise Lost