What should you know about rh negative miscarriage?

RhD is a marker on red blood cells. When an RhD-negative person's blood is exposed to RhD-positive fetal blood, the immune system may make antibodies. Whether anti-D is advised after miscarriage depends on factors such as pregnancy stage, bleeding, treatment and local guidance. This is separate from the emotional and physical care needed after pregnancy loss. A blood test and ultrasound may help clarify what has happened and what care is needed.

Contact your pregnancy or emergency service and tell them that you are RhD-negative, or that your blood group is unknown. Ask whether testing and anti-D treatment are appropriate and when they should happen. The team may discuss expectant care, Medical Management of Miscarriage or Surgical Management of Miscarriage. A Transvaginal Ultrasound may be offered to assess the pregnancy and whether tissue remains. Follow instructions about bleeding, pain relief and follow-up.

Get urgent help for heavy bleeding, severe or one-sided pain, faintness, shoulder-tip pain, fever, offensive discharge or feeling increasingly unwell. These signs can indicate significant blood loss, infection or an ectopic pregnancy and need prompt assessment. Contact care promptly even with light bleeding if you are RhD-negative, because the team may need to discuss time-sensitive treatment.

Ask whether your blood group has been confirmed, whether anti-D is recommended in your circumstances, how the miscarriage will be assessed, and which management options fit your health. Ask how long bleeding may continue, what follow-up test is planned, and who to contact if symptoms change.