advice for emetophobia?

I have emetophobia (fear of vomiting) and it has such a bad impact on my life. I won’t go into too much detail but basically every thing I do is revolved around making sure I don’t get sick.

so I was just wondering if anyone had any advice? I also really want to know, is there a way to avoid vomiting or stop vomiting when you’ve actually got a stomach bug?

that might be a stupid question but I just want to know.

thank you :)