Advice needed my lol is 5 he had his done 3 years ago. Df sf. Since January he's bin on an off food excseve saliva an vomiting we have bin back an forth to the hospital an yesterday they did a endoscopy because they was convinced it had come undone.. So it turns out it's intact?? I'm totally confused also they put a ph in an turns out it had a flat battery 😠totally lost any advice to what may be going on an also he had lost weight