Hi there I understand your concern...you may be having gastroenteritis considering your history...I would suggest you to consult drink plenty of fluids,tender coconut etc to replenish water and
electrolytes loss....take probiotics and antispasmodics to reduce the symptoms...take pantoprazole 40 mg before food along with domperidone...you may require clinical examination to assess dehydration and for specific diagnosis consult nearest physician they will do the needful.