Thanks for the query
As pain was severe and occurred again after two week, a proper laboratory and radiological investigation is needed to find out the cause of pain.Pain abdomen may be due to so many causes( serious or nonserious). In most of the condition treatment of cause is helpful in management. Nexazole and paracetamol
is just a symptomatic management. There is also possibility that even after all investigation cause could not be detected. In that condition this symptomatic management will be helpful.
So I would suggest you consult your doc for proper investigation to find out the cause of pain abdomen.
I hope this answers your query well
Wish you and your family good health