Diagnosing pelvic pain begins with a comprehensive physical examination where your doctor will review your medical history and discuss your symptoms. In some cases, a physical examination alone may reveal the underlying cause of pelvic pain, while additional tests might be necessary for other instances. Some procedures generally used for the diagnosis of pelvic pain include  Urine and blood tests Pregnancy tests  Vaginal cultures to check for STIs Pelvic and abdominal X-rays Laparoscopy Hysteroscopy Stool sample Lower endoscopy Ultrasound CT scan of pelvis and abdomen Additionally, your doctor will need information about when you first started experiencing pelvic pain, any changes in the intensity of the pain, and other related factors.