Hepatitis B vaccine pregnancy dose

Pregnancy is a reason to review the benefits and timing of vaccination with the maternity or primary-care team, not a reason to make a decision alone. The clinician considers hepatitis B test results, possible exposure through a partner or household, work or travel risks, previous doses and how close the pregnancy is to delivery.

If the pregnant person has hepatitis B, the priority is coordinated care for both parent and baby. Newborn vaccination and any additional protective treatment are planned separately from the mother’s own vaccine history. Vaccination does not treat an existing hepatitis B infection, so testing and follow-up remain important when indicated.

Share your antenatal test results and vaccination record at the appointment. Tell the clinician about a recent exposure, possible allergy to a prior dose, immune-suppressing treatment or a bleeding condition. Keep a written plan for any remaining doses and for the baby’s care after birth.

You can review [Hepatitis B Vaccination](/treatments/preventive-care-and-vaccination/hepatitis-b-vaccination/) and [Hepatitis B](/conditions/hepatitis-b/), then use those pages to prepare questions rather than replacing antenatal advice.

Contact your maternity or medical team promptly after a possible blood or sexual exposure, especially if you are not fully vaccinated. Seek urgent care for breathing difficulty, facial swelling or fainting after an injection. During pregnancy, yellow eyes, dark urine, severe nausea, or unusual fatigue also warrant medical review because they can signal several different conditions.

Ask whether your test results or exposure history support vaccination now, which product and schedule are appropriate, and how the plan fits with delivery. Confirm what the newborn will receive, whether household contacts need advice, and whether follow-up blood tests such as a [Liver Function Test](/treatments/diagnostics-and-screening/liver-function-test/) are needed.