No manufactured clinical team sits behind PregnancyTools. One person drafts the dating guides, a second person owns the site and checks her sourcing against the underlying committee opinions. This page names both and says plainly what neither of them is qualified to tell you.
Naomi Foster
Contributing Writer, Health & Wellness
Naomi writes the pregnancy dating guides on this site, along with related fertility and nutrition content for a few other sites in the Encore Editorial network. She is not a doctor, a midwife, or a nurse, and nothing on this site claims otherwise. Her role is to take a published clinical rule, Naegele's rule, the ACOG ultrasound redating thresholds, the term-pregnancy week bands, and set it out in language a reader can check, with the underlying committee opinion or study named rather than paraphrased into something vaguer.
Her byline is on How Is a Due Date Calculated?, How Accurate Is a Due Date?, How Many Weeks Pregnant Am I?, What Are the Trimesters?, How to Calculate Your Conception Date, How Many Weeks Is a Full-Term Pregnancy?, and the pregnancy dating guide.
Before a guide of hers publishes: every clinical figure, a redating threshold, a trimester week range, the definition of full term, is traced back to the ACOG committee opinion or peer-reviewed study named on the editorial standards page and dated to when it was last checked there, rather than taken from another parenting site that may have already rounded or paraphrased it. Nothing is written to sound more striking than the source supports.
Chris Terry
Founder and Editor
Chris built PregnancyTools and the rest of the Encore Editorial calculator sites through Encore Promotional Products. He is not a doctor, midwife or nurse either, and this page does not pretend otherwise. He built the due-date, ovulation, hCG and weight-gain calculators, and before a guide of Naomi's goes live he checks the figures in it against the same committee opinion or study she names, the same practice he applies across the rest of the network.
What he checks: that a cited ACOG opinion or CDC page number is current and matches what the guide says it says, that a study citation like the Jukic pregnancy-length data is represented accurately rather than rounded into a punchier number, and that a reported error gets corrected and dated on the page rather than silently rewritten.
Why there is no obstetrician or midwife byline here
Some pregnancy sites attach a clinician's name and credentials to an article that clinician never wrote or reviewed. This site does not do that. If a page here ever carries a licensed clinician's byline, it will be because that person genuinely wrote or reviewed it, with a credential a reader can verify. Content review on this site does not involve a clinician; it is a citation check against the named ACOG and CDC documents, and it is not a substitute for medical advice.
What this site is not
PregnancyTools is not a clinic, a telehealth service, or a substitute for prenatal care. Neither Naomi nor Chris can see your chart, your ultrasound images, or your bloodwork, and no calculator result here should be read as a diagnosis, a due date a hospital will honor over your provider's own dating, or advice about a specific symptom. If a page reads that way, that is a writing error, not the intent, and we want to hear about it.
How to reach us
Found a week range that does not match the ACOG opinion cited on the editorial standards page, or a guide that states something you can show is out of date? Use the contact form. Messages go to Chris directly, and any correction to a published figure is dated on the page rather than rewritten quietly.