How to show your doctor your symptoms follow your
cycle

4 min read · checked against its sources · updated 17 Oct 2026

The clearest way to show your doctor your symptoms follow your cycle is a daily record kept across at least two cycles, with the week before each period set next to the week after it starts. If the same symptoms are heavy in the first and light in the second, both times, that is the pattern doctors look for.

Why a daily record, and why two cycles

Doctors ask for a record kept as you go because memory bends. Looking back, a bad week tends to colour the whole month. A family-medicine review from the American Academy of Family Physicians says patients should track their symptoms prospectively over at least two cycles, and names the Daily Record of Severity of Problems as one tool for it. There is more on that form in What Is the DRSP?, and on the reason for the second cycle in Why doctors ask for two cycles.

One cycle can be a coincidence: a bad work month, a poor run of sleep. Two cycles that match are much harder to put down to chance.

What to write down each day

Keep it small enough that you will do it on a bad day.

• The date, and which day of the cycle it is. Day 1 is the first day of bleeding.
• Your main symptoms, such as low mood, irritability, anxiety, tiredness, bloating or pain.
• A rating for each, such as 0 to 10, used the same way every day.
• What it got in the way of: work, sleep, people, getting through the day.
• Anything else that could explain a bad day, like illness, a medication change or a very short night.

A notes app, a paper calendar or a spreadsheet all work. Consistency matters more than the tool.

How to compare the week before with the week after

This is the step that turns a pile of notes into something a doctor can read in a minute.

1. Mark day 1 of each period in your record.
2. Take the seven days before it. Note which symptoms show up, how high the ratings go, and how many days they last.
3. Take the seven days after it starts. Note the same things.
4. Put the two side by side, symptom by symptom, for each cycle.

You are looking for a drop. The clinical description of premenstrual disorders is symptoms present for most of the last week before the period, starting to ease within a few days of it beginning, and gone or minimal in the week after. A 2011 AAFP article adds that symptom-free days in the middle of the follicular phase, around days 6 to 10, help tell these conditions apart from others that simply get worse before a period.

If your symptoms are just as heavy in the week after your period as the week before, that is useful to know too. It points your doctor toward other causes, and it is worth saying out loud. The difference between the two is covered in PMDD or PME?.

What it can look like

Say your irritability averages 8 out of 10 in the seven days before your period and 2 out of 10 in the seven days after it starts. Over the next cycle it is 7 and 2. That is a pattern. Your notes also show you slept badly on three of those days, and you can say so; it does not weaken the pattern, it makes your record more honest.

How to open the appointment

Lead with the pattern in a sentence or two, then hand over the record.

"My mood and irritability get much worse in the week before my period and mostly ease within a few days of it starting. I've written it down daily for two cycles, and here is the comparison."

Then ask what your doctor makes of it and what they would want to check. More questions are in PMDD questions to ask your doctor, and tips for the day itself are in Preparing for a PMDD appointment.

What a record cannot do

A record shows timing. It does not diagnose anything. The AAFP notes that PMDD is a diagnosis of exclusion, so your doctor will also want to rule out other causes, such as thyroid problems or a mood disorder that runs all month. A clear pattern gives that conversation a place to start.

If you ever feel unsafe or have thoughts of harming yourself, do not wait for a pattern. Contact a doctor, a crisis line or emergency services straight away. In the US you can call or text 988.

Doing the comparison without the spreadsheet

You can build all of this by hand. Tideline does the sorting for you: you write or say one sentence a day, it files the mood and symptoms under the right cycle day, and after two cycles it sets the week before each period beside the week after, symptom by symptom, in your own words. You can save it as a PDF to bring along.

Keep the record your doctor needs. Tideline is a period and mood tracker for iPhone: write one sentence a day, and after two cycles it puts the week before your period next to the week after it starts. Free to track, no account.
Get Tideline on the App Store

Keep reading

• Why doctors ask for two cycles
• Preparing for a PMDD appointment
• Period Apps That Make a Doctor Report: Clue, Me v PMDD, PMDD Tracker and Tideline Compared

Sources

• American Academy of Family Physicians: Don't Miss the Diagnosis of Premenstrual Dysphoric Disorder
• American Academy of Family Physicians: Premenstrual Syndrome and Premenstrual Dysphoric Disorder (American Family Physician, 2011)