Hello Dear and thanks for the query
Your pain can be due to a renal colic
or Infection of the GI track like Appendicitis
. You need to go to the ER and get some test done like Complete blood count
You can take some anti-spasmodic drugs like dicylcomine to reduce the pain. Analgesic
drugs like Ibuprofen
also help if anti-spasmodic is not available.
Keep yourself hydrated and take only light and fresh food.
Avoid all type of fatty and oily food products.
continues than stop orally and go to the ER immediately.
Hope this will help you.