FIRST you can order a LABORATORY ANALYSES of the blood (blood picture, hemoglobin, hematocrit, sedimentation, liver profile, urea, creatinin, uric acid, bilirubin) and urine (proteins, urobilinogen, bilirubin, erythrocytes, leucocytes, nitrates). Additionally, you might want an ULTRASOUND examination of the inner abdominal organs. Because you are a woman, a gynecological examination is also recommended. A CT-scan could be done after all these examinations have been completed. The results from these examinations will help your doctor to eliminate and identify possible causes.