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Ultrasound in Pregnancy
A pregnancy ultrasound uses sound waves — not radiation — to check the baby's growth and wellbeing. It is safe for mother and baby and is a routine part of antenatal care.
Causes & risk factors
- To confirm pregnancy and estimate the due date
- To check the baby's growth and development
- To check the position of the baby and placenta
- To look at the baby's heartbeat and movements
- To check for twins or more
- To investigate bleeding or pain in pregnancy
Common symptoms
- Routine antenatal check (no symptoms needed)
- Tummy or pelvic pain in pregnancy
- Bleeding in pregnancy
- Checking growth if there are concerns
Tests & diagnosis
- Pregnancy blood test (beta-hCG)
- Routine antenatal blood tests
- Further scans if needed
Treatment & management
- A gel is put on the tummy and a probe is moved over it
- An early scan may be done internally (transvaginal) for a clearer view
- It is painless and uses no radiation
- You may be asked to have a full bladder for some scans
- It shows the baby's size, position, heartbeat and the placenta
When to see a doctor urgently
- At routine antenatal scan appointments
- If you have bleeding or tummy pain in pregnancy
- When your midwife or doctor wants to check the baby's growth
Frequently asked questions
Is ultrasound safe for my baby?
Yes. Ultrasound uses sound waves, not radiation, and has been used safely in pregnancy for decades. Scans are done by trained staff only when there is a reason to.
Why might I need an internal (transvaginal) scan?
In early pregnancy, a scan through the vagina gives a clearer picture of the womb and baby than a scan over the tummy. It is safe and only slightly uncomfortable.
Explore more
Sources & further reading
- World Health Organization (WHO)
- MedlinePlus — U.S. National Library of Medicine
- Ministry of Health & Family Welfare, India
- Indian Council of Medical Research (ICMR)
Reviewed by Dr. Sanjay Anbu, MBBS. MedDroid is an AI medical assistant and can make mistakes. It provides general health information, not a diagnosis or medical advice — always consult a qualified clinician. In an emergency, contact your local emergency number immediately.