Placenta Previa Explained
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Medically reviewed by
Baby Circle Medical Board
Reviewed on 18 July 2026
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A low placenta covering the cervix — often painless bleedingEvidence-based & doctor-reviewed
Placenta previa is when the placenta lies low in the uterus and partly or fully covers the cervix. It is usually found on the anomaly scan and often causes painless bright-red bleeding later in pregnancy. Many low placentas move up as the uterus grows.
What to expect
- Often painless bleeding in the second half of pregnancy.
- Monitored with ultrasound; position is rechecked later.
- If it persists over the cervix, a planned C-section is usually needed.
When to seek care
Report any bleeding promptly. Heavy bleeding is an emergency — go to hospital immediately and avoid sex or anything vaginal if advised.
Frequently asked questions
Does a low placenta always mean previa?
No — many low placentas move up as the uterus grows and are rechecked later.
Is placenta previa dangerous?
It can cause bleeding; with monitoring and a planned birth, outcomes are usually good.
Will I need a C-section?
If the placenta still covers the cervix near term, a planned C-section is usually needed.
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Bleeding During Pregnancy: Causes & When to WorryPlacental Abruption: Warning SignsTwin Pregnancy: What to Expect📖 40-Week Pregnancy Guide
Medical disclaimer: This article is for general education only and is not a substitute for professional medical advice. Always consult your doctor about your pregnancy, and seek care immediately for any warning signs. Reviewed by the Baby Circle Medical Board.