Hi welcome to HCM.... According to history she could have gastritis infection.....It could be viral or bacterial ... For vomiting domperidone tablet can be given..... Maintain hydration.... Take small meal with frequent interval and avoid high fatty foods and spicy foods .... Avoid smoking and alcohol if habit ... Excess tea , coffe avoided .... Give her omeprazole capsule on empty stomach before meal .... If needed and not improving than ciprofloxacin like antibiotic given.... Investigate with CBC , USG abdomen also .... Consult physician or if feasible gastroenterologist for your condition... Take care ...