 [ Symptoms ] what is up with my tummy  my symptoms • full feeling in stomach like its full of water hard to move and lose appetite and want to vomit • symptoms become troublesome when stressed mild burning feeling • can eat normally in school and also feel normal at school • i can feel water up my throat and want to burp all the time • taking antacids and cimetidine is this an ulcer because i have not been screened yet for h pylori or an ulcer screening but does this sound like one help i am 16 and a hypochondriac [ Disease ] restlessness is a common side effect of the over the counter products that can be used as sleep aids because the active ingredient is an antihistamine i would advise making an appointment with your doctor or health care provider for further evaluation and advise them of the side effect you experience with the otc products you may require prescription medication instead because they work differently and are not antihistamines