Woke up to bile vomit in my mouth it took my breath. went to toilet and vomited bile. took heartburn med. drank water was sweet. anything wrong?

Maybe. Maybe not.: Sometimes, stuff happens. Vomiting one time, every few years, may just be related to a disagreeable meal, greasy foods, overeating, a temporary illness, use of medications, too much alcohol drinking, etc... Symptoms that recur, persist, or worry the patient can be checked out by his primary care doctor... who may think about problems like gallstones, gastric reflux, liver disorders, etc...