How do you deal with anxiety and OCD related to vomiting when someone in your home gets sick or you’ve convinced yourself you’ve been exposed to a virus?

I am horribly afraid of vomiting. The thought of it is extremely triggering for my anxiety and OCD. Ever since I had the stomach flu a while ago, it’s become a fear of germs. I never even threw up last time, but my brain is trying to tell me if I get sick again it won’t be like last time.

I visited a theme park recently and my brain convinced me I’d been exposed to the stomach flu and that I needed a week to pass without anyone in my house getting sick to get my anxiety to go away. And now someone in my house (can’t say who due to some weird paranoia I have) is complaining of nausea.

To add to this, I get sick to my stomach if I get stressed. I’m currently dealing with that. The only way to get my stomach to feel better is if I sleep off the nausea. But I can’t do that if I can’t get my brain to leave alone.