Hello There,
In case of Pain in abdomen, first of all you should visit to General Physician or Gynacologist. After through clinical examination and dignosis, your treating physician will suggest you some tests. Usually doctors suggest "Usltrasonography of Abdomen and Pelvis" to rule out the cause. Same time doctor may suggests you Blood and Urine tests to confirm the diagnosis.
Next Steps
General Physician or Gynacologist Visit is must.