Stomach bug....

Cassie 🍩 • Wife of 15 years💍. Mama of 5 with a loss, and my last and final little born 04/18 👶🏻. Occupational Therapist. Far from perfect, but serve a perfect God 🙌🏽.
Has anyone's LO gotten a stomach bug yet, and I'm not talking about just the runs, I'm talking both ends?! My 2 year old just vomitted all over the couch and floor and while I was able to clean it, it was impossible to get all of it obviously (germ wise) as I have carpet and only the seat cushion part of my couch is removable and washable (it got on the entire couch/non-washable parts). Sooooo, I know my LO will probably be getting too, not to mention they've been sharing toys and such. This is also the 1st time my 2year old has had a stomach illness. My older two are 11 and I can't really remember how it was with them. Any advice on how to care for her if she does get sick and about how long it will/should last? This is horrible!