Excessive Pooping

Hannah • This is my first child and my husband, Mishon and I are so excited!

My 13 month old has had 18 poopy diapers in 24 hours, Is extremely fussy, and is just sleeping all the time. I txt her doctor and she said it was something viral.

My question is has anyone else had any experience with this? Is this truly something viral or something worse?

Thanks in advance