HealthTap Online Primary Care Doctors Accepting New Patients
Book a video visit
HealthTap
Telehealth
A member asked:

How do doctors determine the conception date?

A doctor has provided 1 answer

Two weeks after last: The date of conception is approximately 2 weeks after the first day of the last menstral period. It is also approximately 38 weeks or 266 days before the due date.

Answered 2/18/2015

3.2k views

Thank

Related Questions

A member asked:

Dr. Gerard honore u say clarify l had sex with my ex april 22th doctor say my conception date is between the 6th or 10th of may is thismy ex or boyfri?

A doctor has provided 1 answer

A member asked:

Hi doctors i had a ultrasound yesterday it said due aug 29 what is more accurate LMP or ultrasound i need my most accurate conception date please help?

A doctor has provided 1 answer

A member asked:

My doctor told me based on my 8 and 12 week ultrasound that my conception date was between dec. 31 and jan 5 how accurate is this ?

A doctor has provided 1 answer

A member asked:

I'm unsure of my last period, my doctor gave me a due date of novemer 30, 2013 when would i been ovulationg and when would conception possibly occur?

4 doctors weighed in across 2 answers

A member asked:

When does it mean when a doctor considers the LMP due date and conception if the ultrasound is in a 7-10 day agreement with the lmp? Need an example

A doctor has provided 1 answer

Sponsored Content
HealthTap Medical Group does not endorse products or services. Sponsored content revenues support our mission to make health information free and accessible to all.Learn more

People also searched for:

How accurate are the doctors measurements of the baby to determine baby weeks, due date, conception, ovulation etc...
What if i don't know my LMP how will a doctor determine my conception date?
How accurate are doctors in knowing the date of conception once a woman has had an ultrasound?
Do doctors tell you your due date 40 weeks from conception?
How off could my doctor be on my conception date? How can I verify it? Could she be a week off or just a few days? Please help!!

Telemedicine

Primary Care
Manage Your Conditions
Women's Health
Children's Health
Men's Health
Senior Health
Wellness, Prevention & Lifestyle
Sexual Health
Mental & Behavioral Health
Travel Medicine
Urgent Care
Ask your question
Didn't find what you're looking for?

90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more.

Ask your question

More of what we treat

Allergies
Antibiotics
Asthma
High Blood Pressure
Prescriptions
Type 2 Diabetes
Content on HealthTap (including answers) should not be used for medical advice, diagnosis, or treatment, and interactions on HealthTap do not create a doctor-patient relationship. Never disregard or delay professional medical advice in person because of anything on HealthTap. Call your doctor or 911 if you think you may have a medical emergency.
HealthTap
HIPAA logo
HIPAASecure
Soc 2 Type 2 logo
SOC 2 Type 2Certified
JCAHO Accredited
JCAHOAccredited
Member App

Download HealthTap

Video visit and message your doctor

Member App QR Code
Play Store Member LinkApp Store Member Link

Questions?

+1 (888) 828-0841support@healthtap.com
LinkedInTwitter
HomeTermsPrivacyCookiesDMCAHealth TopicsDoctors DirectoryDoctor Q&A by Specialty
Copyright 2026 HealthTap, Inc.