Differential Diagnosis for Pelvic Pain at 5 Weeks Pregnant

• Single Most Likely Diagnosis
  • Miscarriage: This is a common cause of pelvic pain in early pregnancy, especially at 5 weeks. The pain can range from mild to severe and is often accompanied by vaginal bleeding.
• Other Likely Diagnoses
  • Implantation cramping: Some women experience mild cramping as the embryo implants into the uterine lining, which can be mistaken for pelvic pain.
  • Urinary tract infection (UTI): UTIs are common during pregnancy and can cause pelvic pain, frequent urination, and dysuria.
  • Constipation: Hormonal changes during pregnancy can lead to constipation, which can cause pelvic discomfort or pain.
• Do Not Miss Diagnoses
  • Ectopic pregnancy: Although less common, an ectopic pregnancy can cause severe pelvic pain and is a life-threatening condition if not promptly diagnosed and treated.
  • Ovarian torsion: This is a rare but serious condition that can cause sudden, severe pelvic pain and requires immediate medical attention.
  • Appendicitis: Appendicitis can occur during pregnancy and may present with pelvic pain, nausea, and vomiting.
• Rare Diagnoses
  • Corpus luteum cyst rupture: A ruptured corpus luteum cyst can cause sudden pelvic pain, but this is relatively rare.
  • Ureteral stone: Although not exclusive to pregnancy, a ureteral stone can cause severe pelvic pain and may be more challenging to diagnose during pregnancy due to physiological changes.