My son is 13 months and had threw up twice this morning and that's it. but as well he has had about 5 diapers with whitish creamy poop any worries?

Whitish-yellow or : light-gray stools & vomiting can occur in viral gastroenteritis & viral hepatitis or other liver disorders. Kids may not be as sick as adults with Hepatitis A. but they are contagious. Check some rectal temps & save a stool sample to show his pediatrician. If he remains active & well-hydrated on Pedialyte, see his MD on Monday; if sicker, go to ER. Wash your hands thoroughly after changing him.