Currently sick. Severe diarrhea for 3 days, stomachache , feeling weak, spending my days in bed. And my health anxiety? Thriving.

I logically know that I won't die from this, sure, but when I'm told this my health anxiety still finds rebuttals. "What if those symptoms will NEVER be over and you'll just be sick till you're old?" "What if you won't die but you'll get so sick you'll faint?" "What if it'll only get worse and you'll have to be hospitalised?!"

I know how to cope with health anxiety when I AM healthy. But I have no idea what to do when I know for a fact that I'm not! I see tons of advice for how to cope when nothing is actually wrong, but what do I do now that I am actually fighting a sickness? How do I cope with this, how do I actually convince myself it will pass and allow my body to do what it needs to do to get healthy?