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

Lmp was 16 april but ultrasound at 9 weeks say lmp was 22nd april. does this mean i ovulated late? also cud i have concieved from sex from 26th april?

A doctor has provided 1 answer
Dr. Charles Gordon answered

Specializes in Adolescent Medicine

6 day difference: The best that is claimed for U/S is +/- 14 days so determination is well within the limits of precision of the examination. All quantitative tests have a precision and an accuracy. Ask your doc to explain the difference to you for any given exam done on you. They are different and have very different meanings!

Dr Harte agreed

Answered 10/5/2015

2.2k views

Thank

Related Questions

A member asked:

Lmp and early vaginal ultrasound matched @ 6 weeks 5 days matched exactly. Does that mean i ovulated on cd14? 28 day cycles!

A doctor has provided 1 answer

A member asked:

Lmp 3/2 I had sex on 3/14 & 3/24. when did I conceive? My ultrasound states im 21wks and by LMP im 22wks? took a test on 3/26 neg and on 3/30 was pos

A doctor has provided 1 answer

A member asked:

I had sex on feb 18 and feb 26. My LMP was 2/9, ovulation 2/23! us 15 weeks 2 days on 5/23 with edd of 11/11. When did i conceive?

A doctor has provided 1 answer

A member asked:

I was on Depo-Provera so i don't know my LMP but I am 20 weeks and 0 days as of 12-24-2013 and my due date is 05-14-2014. When did i conceive/ovulate/have sex?

A doctor has provided 1 answer

A member asked:

If a sonogram due date matches LMP due date, does that mean ovulation was right on time of regular cycle, and not earlier?

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:

If there is a four day difference between my LMP and ultrasound date, don't i go by ultrasound and could that mean i ovulate late?
If your early dating ultrasound shows that my conception date is 18 days after my lmp, does that mean i ovulate late?
When did i conceive? 1 sex partner before lmp. New sex partner after lmp. Lmp=5/11/13. Ultrasound on 7/23/13, dated at 10weeks+2days, edd of 2/16/14.
Hi, my LMP was 9/March 15 and have a regular 35 day cycle. My partner and I are trying to conceive and have been for the past 3 months without success. I am currently 8 days late and have had negative test results. I had an ultrasound 2 days ago (for low
If your ultrasound ( 6 and 8 weeks ultrasound) and your LMP match up does that mean you ovulated on day 14?

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.