 [ Symptoms ] belly aching starving nauseous can not sleep – what could it be [ Disease ] hi it is likely you are having a form of anxiety disorder and the insomnia you are complaining from plus the nausea or vomiting is due to the hyperactivity of the vagus nerve you are very worried and having overthinking u need to start relaxing your self by practicing yoga sports or a kind of tough sport plus reading a book before sleeping and putting the light to zero at home before sleeping drink a plenty of fluids specially warm ones avoid caffeine …get a warm shower and sleep well…