I would skip the drs and head straight for the Base (saw your a lismore person too...HI). My four year old had gastro last october and I waited all day to get into the drs and the first thing the dr said was she is going to hospital. Its mainly as a precaution due to their little bodies.
Try and get as much water as possible into her, defiantly no forumla/breastmilk as it will bounce off her stomach and come straight back up. Ice on her lips (not fro too long) might get some extra fluids into her.
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