What is the exact location of this Pain ?
Since when are you having this Pain ?
Any investigations done so far ?
Have you noticed any impulse or swelling in the region of Pain on coughing ?
The symptoms you describe needs further evaluation to rule out Umblical Hernia , Diverticulitis or Appendicitis .You need to be seen by a Doctor for further clinical examination and investigations like Ultrasound abdomen , abdominal CT scan if necessary .