i've had the odd taste thing, also nausia a little bit but i've been one of the lucky ones crohns disease has very rarely made me vomit
the taste thing generally comes about when i havent ate much but if you are eating and it's making you vomit then obviously something down inside you isn't agreeing with whatever type of food it is or maybe your stomach might be too sensative at the minute? personally if it was me i'd run straight to Accident and Emergency but again i'm a little bit of a wimp when i get any symptoms that reflects on my crohns as i don't like it to have too much power over me, if it's causing you large discomfort and making you dizzy and weak i'd go straight in Luna
Sometimes doctors take longer than you need (obviously they have to go by the book) but in my eyes crohns disease shouldn't always be by the book
Bobby