any advise?

So this is a bit gross but y’all have probably experienced this before. I’ve had some diarrhea for a couple days now and have really dry red skin on my face which isn’t normal. my skin is extremely sensitive but, routine hasn’t changed at all. my skin also feels dry and stings even though i moisturize. (ive attached a photo of my skin atm)

I’ve been staying hydrated too. i drink probably 3-4 bottles of water a day. what do y’all think i should do? just wait and keep drinking water and moisturizing?