IUD

A 24-year-old female presented to the ED for pelvic pain that started 8 hours ago. The patient reports sudden onset pain that is getting progressively worse, along with vaginal bleeding. The patient has not had unprotected sex and no history of sexually transmitted infections. She appears visibly uncomfortable, is tachycardic, has dry mucous membranes, and is tender in the suprapubic area. Pelvic exam reveals scant blood per os, IUD strings seen, and she has pain with bimanual uterine palpation. What’s the next step in your evaluation and treatment?