Ultrasound pregnancy patient guide
Informed by recognized medical guidance
Overview
An ultrasound pregnancy scan (also called a sonogram) uses sound waves to create pictures of your baby inside the womb. It is safe, painless, and does not use radiation. The scan can check your baby’s growth, the placenta, and the amount of fluid around the baby.
Key facts
- Ultrasound scans are a routine part of pregnancy care in many countries.
- The scan is performed by a sonographer or a doctor trained in ultrasound.
- Most scans are done through your belly (abdominal) or sometimes through the vagina (transvaginal) for early pregnancy.
Yes, ultrasound scans are very common in pregnancy. Most women have at least one scan, usually at around 12 weeks and again at 20 weeks.
Ultrasound scans are used for all pregnant women to monitor the health and development of the baby. They are also used if there are concerns such as bleeding, pain, or uncertainty about dates.
Symptoms
- Heavy vaginal bleeding (soaking through a pad in an hour)
- Severe abdominal pain or cramping
- Signs of a miscarriage (passing large clots or tissue)
- Sudden gush of fluid from the vagina (possible rupture of membranes)
- ⚠Mild bleeding or spotting
- ⚠Unusual pain or discomfort in your belly or pelvis
- ⚠Decreased movement of the baby (in later pregnancy)
Common symptoms
- You do not need to have symptoms to have a pregnancy ultrasound. It is often done routinely.
- However, scans may be recommended if you have bleeding, pain, or if your healthcare provider needs to check the baby's growth or position.
Causes
Main causes
- Ultrasound scans are not caused by a condition. They are performed to monitor pregnancy.
- Reasons for a scan include: dating the pregnancy, checking for multiple babies, screening for certain conditions, and checking baby's position.
Risk factors
- There are no risks from the scan itself for you or your baby. The sound waves are very low energy.
When to see a doctor
See a doctor urgently if:
- If you have heavy bleeding, severe pain, or think you may be having a miscarriage.
- If you have a sudden gush of fluid or signs of labor before 37 weeks.
Book a routine appointment if:
- You will be offered scans as part of your antenatal care. Usually a dating scan around 8–14 weeks and a mid-pregnancy scan around 18–21 weeks.
- Your healthcare provider will tell you when to come for these routine scans.
Diagnosis
A pregnancy ultrasound is not a diagnosis of an illness. It is an imaging test used to gather information about your pregnancy. The sonographer or doctor will interpret the images and provide results to your healthcare team.
Tests that may be done
- Abdominal ultrasound (transducer moved over your belly with gel)
- Transvaginal ultrasound (small probe placed in the vagina) – often used early in pregnancy or for better views
What to expect at your appointment
You will lie down on a bed. Gel is applied to your belly or the probe. The sonographer moves the device to get clear images. It usually takes 15–30 minutes. You may be asked to have a full bladder for some scans. The scan is painless, though the gel may feel cool.
Treatment
Ultrasound scans do not treat anything. They provide information that helps your healthcare provider manage your pregnancy. If results show a problem, treatment will depend on the specific issue.
Self-care at home
- Drink water before the scan if you are told to have a full bladder.
- Wear loose, comfortable clothing.
- You can ask questions during the scan.
Medical treatments
Based on scan findings, your healthcare provider may recommend additional monitoring, medications, or procedures. Always discuss any concerns with your doctor or midwife.
When is surgery considered?
Surgery is not a direct result of an ultrasound. In rare cases, if a serious problem is detected (like an ectopic pregnancy), surgery may be needed. Your healthcare team will explain all options.
Living with this condition
After a routine ultrasound, you can go about your normal day. There are no restrictions. If you have a specific condition, follow your doctor's advice.
Lifestyle tips
- Continue with regular prenatal care and attend all scheduled scans.
- Eat a healthy diet and stay active as recommended by your healthcare provider.
- Avoid smoking, alcohol, and recreational drugs during pregnancy.
Diet and exercise
Eat a balanced diet with plenty of fruits, vegetables, whole grains, and lean protein. Moderate exercise like walking or swimming is usually safe. Always check with your midwife or doctor before starting new activities.
Mental health and emotional wellbeing
Feeling anxious before a scan is normal. Results can bring relief or worry. If you feel stressed, talk to your midwife or doctor. They can offer support or refer you to a counselor.
Prevention
Ultrasound scans are not a condition to prevent. They are a tool to help ensure a healthy pregnancy. Attending all scheduled scans and prenatal appointments can help identify issues early.
Vaccines
Vaccines are not related to ultrasound scans. However, staying up to date with recommended vaccinations (like flu and whooping cough) is important in pregnancy. Ask your doctor.
Screening programmes
Routine ultrasound scans are a form of screening. They check for common conditions and help plan care. Your healthcare provider will explain what each scan looks for.
Complications
If left untreated
- Ultrasound scans themselves have no complications. However, if a problem is found and not followed up, it could affect the pregnancy. That is why attending scans is important.
Long-term outlook
For most women, ultrasound scans provide reassuring news that the pregnancy is progressing well. If a problem is found, early detection often leads to better management and outcomes. Your healthcare team will support you every step of the way.
Find support
International organisations
Local organisations
- NHS Pregnancy and Baby Guide ↗ · United Kingdom
Helplines
External links open third-party websites. Ruqelo Health is not responsible for external content. Listing an organisation does not imply endorsement.
Always verify with your doctor
Health guidelines vary by country and region. The information in this article is based on international clinical guidelines but may not reflect the specific guidelines, medications, or practices in your country. Always discuss your health concerns with your own doctor or healthcare provider, and refer to your local national health guidelines where available.
Important notice This information is for educational purposes only. It does not replace professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider about your specific situation. If you are experiencing a medical emergency, call your local emergency services immediately.
Related conditions
Sources and guidance
This article is educational and is prepared with reference to recognized health information and clinical guidance sources where available. Specific source links may vary by topic.
Last updated: July 19, 2026
Educational note: This information is for education only and is not a diagnosis.
Use it to support, not replace, advice from a licensed clinician.
If symptoms are severe, worsening, or urgent, call your local emergency number or seek emergency care.