Any advice for a mom with emetophobia?

I just kind of feel like I'm losing it at the moment. My little one had a stomach bug in December and I'm pretty sure I caught it a week after. It feels like every day since I've just been dreading the next time. So many kids are out sick right now and I feel like I'm just hyper focused on that all the time. Constantly watching my little for any change at all. I also have autism and OCD so I know thats a huge part of it. Any advice on how to cope or stories of how often or little your kiddo gets sick with these kinda bugs? Mine is 4, about to turn five and she's in a special class with only 10 kiddos including her