It is usually diagnosed after menarche, with a clinical presentation of dysmenorrhea, recurrent abdominal pain, and irregular menses. However, it is rare to diagnose it during pregnancy, subsequently resulting in spontaneous abortion. [ncbi.nlm.nih.gov]

A woman at 6-8 weeks' gestation presented with vaginal bleeding and abdominal pain. Although afebrile, the patient was hypotensive, tachycardic, and tachypneic. [ncbi.nlm.nih.gov]

bleeding occurring before 20 wk gestation without cervical dilation and indicating that spontaneous abortion may occur Inevitable Vaginal bleeding or rupture of the membranes accompanied by dilation of the cervix Incomplete Expulsion of some products [merckmanuals.com]

Typically, patients present with vaginal bleeding and a (still) closed uterine orifice. Pregnancy is still intact and infantile heart sounds are still detectable. [lecturio.com]

[…] miscarry Inevitable abortion: Vaginal bleeding, cervical os is open; products of conception (POC) have not been expelled Incomplete abortion: Vaginal bleeding, cervical os is open with partial passage of some POC and some retained POC Complete abortion [emergency.unboundmedicine.com]

Symptoms of an infection include fever, vaginal bleeding that does not stop, cramping, and a foul-smelling vaginal discharge. Infections can be serious and need immediate medical attention. [nlm.nih.gov]

Signs and symptoms of this infection include: Fever Chills Lower abdominal tenderness Foul-smelling vaginal discharge Prevention Often, there's nothing you can do to prevent a miscarriage. [mayoclinic.org]

Women who have had an unsafe abortion usually come to the health care facility with the following signs and symptoms: ‐ vaginal bleeding ‐ abdominal pain ‐ fever ‐ purulent or foul smelling vaginal discharge ‐ shock The interventions which the health [doi.org]

Although obstetric mortality due to complications of Clostridium perfringens infection is rare at present, we report a case of fatal clostridial sepsis secondary to a septic spontaneous abortion. [ncbi.nlm.nih.gov]