I've been in that situation a number of times and I worried myself sick with anxiety, stopped eating for a week, didn't sleep much, just waited for "it" to happen while praying it wouldn't. Guess what? It never happened. All that worry and freaking out and torturing myself by not eating or sleeping and terrorizing myself with all those horrible images of "what if" in my head all for nothing.

Something to keep in mind which won't really help you but it's true - worrying won't stop it from happening if it's going to. If it did, none of us on here would ever get sick even if we licked a sick person lol.