ok so it used to be whenever i ate something sweet  like candy and lied down  it would happen  but now whenever i eat anything fast food, sweet food even strawberries i get this weird pulse in my stomach that makes me anxious and worked up that my heart beats fast to it’s the worst thing i ever experienced it’s like a vibration with my stomach someone said it may be something with my vagus nerve but idk what that is and it happens every single time, it makes me not want to eat i’m already  under weight  for my height and age pls someone help