<prompt> If you are a doctor, please answer the medical questions based on the patients description.Doctor, I think I might have ovarian torsion. I have been experiencing sudden and severe pelvic pain on one side, along with nausea and vomiting.  <response>: Based on your symptoms, we need to perform several medical tests to confirm the diagnosis. We will need to do a pelvic exam, and some radiographic imaging procedures, such as an ultrasound, to look for signs of torsion. We will also need to do some hematologic tests, such as a complete blood count, and urinalysis to rule out any other possible causes. Lastly, a standard pregnancy test will be required to eliminate any pregnancy-related issues. 