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Is it normal for the gestational age to be a week more than the last menstrual period?

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Patient's Query

Hi doctor,

I had my last period before 4 weeks 5 days. I confirmed pregnancy by doing a home pregnancy test. When I went to the scan, the doctor told me that the sac measures 0.6 inches and it is 5 weeks 5 days. Why do I have this difference? Is this normal?
Answered by Dr. Sravanthi Nuthalapati

Education:

MBBS

Professional Bio:

Dr. Sravanthi Nuthalapati is a skilled and compassionate Obstetrician and Gynecologist. Her expertise includes high-risk pregnancy management, infertility evaluation, menstrual disorder treatment, PCOS management, and comprehensive prenatal and postnatal care. She is also well-versed in minimally invasive gynecological procedures and is committed to providing personalized and evidence-based care for women’s health at every stage of life.

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Hi,

Welcome to icliniq.com.

There is nothing to be worried about this calculation as it is just a machine reading. You can follow the actual date of gestational age calculations. As per your date, your gestational age is 4 weeks 5 days and gestational sac diameter is 17 millimeters. According to the scan, you have a gestational age of 5 weeks 5 days. Gestational sac diameter is a measurement to predict gestational age in early pregnancy when the embryo or fetal pole is not visible on the ultrasound. You can have a deviation of plus or minus one or two weeks from the actual gestational age and so it is not accurate.

An ideal gestational age that corresponds to the actual pregnancy dating is the crown-rump length (CRL) of the fetus. CRL is the most accurate indicator of gestational age throughout three months of pregnancy. It can be visualized properly after six weeks and you can check your baby's heartbeat too. Go for a rescan after ten to fourteen days. You can able to view the baby, its measurement, and its heartbeat. You can take tablet Folic acid 5mg tablets daily for three months. Avoid intercourse for the first three to four months. Everything is fine as of now.

Investigations to be done

You need to do a routine antenatal investigation.

Treatment plan

Take tablet Folvite 5 mg (Folic acid) daily for three months.

Preventive measures

Avoid having sexual intercourse for the first three to four months.
Medically reviewed by Dr. Sneha Kannan
Published At April 16, 2020
Reviewed At August 29, 2023

Education:

MBBS

Professional Bio:

Dr. Sravanthi Nuthalapati is a skilled and compassionate Obstetrician and Gynecologist. Her expertise includes high-risk pregnancy management, infertility evaluation, menstrual disorder treatment, PCOS management, and comprehensive prenatal and postnatal care. She is also well-versed in minimally invasive gynecological procedures and is committed to providing personalized and evidence-based care for women’s health at every stage of life.

This doctor is not available for online consultations on the platform anymore.

Consult other doctors in the same speciality

Education:

BDS

Professional Bio:

Dr. Sneha Kannan is a skilled Dental Surgeon with expertise in providing general dental care, including scaling, fillings, and preventive treatments. She does oral surgery procedures such as extractions and minor surgical interventions. She does procedures in restorative dentistry, including crowns, bridges, and dentures. She is an expert in doing endodontic treatments such as root canal therapy. She is well-versed in doing procedures in cosmetic dentistry, including teeth whitening and smile correction. She can provide pediatric dental care for children’s oral health and preventive treatments. She promotes oral hygiene awareness and preventive dental practices.  

This doctor is not available for online consultations on the platform anymore.

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Same symptoms don't mean you have the same problem. Consult a doctor now!

Dr. Sravanthi Nuthalapati
Dr. Sravanthi Nuthalapati

Obstetrics and Gynecology

Consult this doctor

Education:

MBBS

Professional Bio:

Dr. Sravanthi Nuthalapati is a skilled and compassionate Obstetrician and Gynecologist. Her expertise includes high-risk pregnancy management, infertility evaluation, menstrual disorder treatment, PCOS management, and comprehensive prenatal and postnatal care. She is also well-versed in minimally invasive gynecological procedures and is committed to providing personalized and evidence-based care for women’s health at every stage of life.

This doctor is not available for online consultations on the platform anymore.

Consult other doctors in the same speciality
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