The symptoms can be attributed to Gastroenteritis
secondary to consumption of beef rolls & cakes.
Symptomatic relief can be obtained by taking Pantoperazole + Domperidone
(to be taken 30 min before meals)
A course of antibiotics (Ofloxacin+Ornidazole) need to be taken
If you still find any difficulty, kindly consult a Gastroenterologist
for proper clinical examination.
Investigations like complete blood count
, Ultrasound scan of abdomen will be helpful to detect any pathological cause for the symptoms.
Wishing you a Good Health.