About Ovulation.guide

What this site is

Ovulation.guide has two jobs. The first is a calculator that turns three inputs — your last period, your cycle length and your luteal phase — into the dates that actually matter: ovulation, the six-day fertile window, and when to start testing. The second is a small library of guides covering the questions people search for after they get those dates.

The site is deliberately small. Seventeen guides across three hubs, plus two calculators. Every guide is written to stand on its own and to link to the two or three others that genuinely help. There is no archive of thin posts and no publishing schedule to feed.

Editorial policy

Everything on this site follows the same five rules.

1. Numbers get ranges, not false precision. Where studies disagree, the range is shown. A single confident figure where the literature has a spread is a red flag, not a service.
2. Guidance bodies first. NHS, NICE, ACOG, ASRM, ESHRE, RCOG and Cochrane come before individual studies. Where a single study is cited, it is because it is the study the guidance rests on.
3. Weak evidence is labelled weak. If a supplement has a plausible mechanism and no trial support, the page says so. Several of our guides tell you not to buy things.
4. Every guide names when to stop reading and call someone. A "when to ask for help" section is mandatory. Search results are not triage.
5. Sources are listed and linked. At the bottom of every guide, in full, so you can check the claim rather than trust the site.

Who writes it

Guides are researched and written by the Ovulation.guide editorial team against current guidance from national health bodies and peer-reviewed literature. Where a claim is contested — the value of progesterone in early pregnancy, whether vitamin D supplementation changes outcomes, how long to wait after a miscarriage — the disagreement is described rather than resolved by picking a side.

We are not clinicians and this site does not provide clinical care. What it provides is the background reading that makes an appointment more useful: knowing which tests exist, what the numbers mean, and which questions are worth asking.

Accuracy and corrections

Guidance changes. Recurrent-loss investigation thresholds moved from three miscarriages to two; advice to wait six months before conceiving again after a loss has largely been withdrawn. Pages carry the date they were last reviewed, and that date is real.

If you find something out of date, wrong, or misleading, tell us and we will fix it. Corrections that change the meaning of a page are noted on the page itself. Email [email protected] or use the contact form.

The site's history

Ovulation.guide has published on this domain since 2016. Several of the guides here carry the same URLs as the originals — the Clearblue instructions, the ovulation pain guide, the miscarriage pages, the fertility nutrition articles — because people still link to them and those links should still work. Those pages have been rewritten from current guidance rather than restored as they were.

How this site makes money

It doesn't sell supplements, fertility monitors or subscriptions, and there are no affiliate links in the guides. That matters here specifically: a page whose job is to tell you most fertility supplements lack evidence cannot also be earning commission on them.