<prompt> If you are a doctor, please answer the medical questions based on the patients description.Doctor, I have been experiencing irregular menstruation for a few months now and Im worried that something might be wrong.  <response>: Based on your symptoms, we will need to perform a series of medical tests to determine the cause of your irregular menstruation. We will need to do a radiographic imaging procedure, hematologic tests, ultrasonography, pelvis exam, examination of breast, standard pregnancy test, and rectal examination. 