Educational tools only — not medical care. These tools can be incomplete or wrong and don’t diagnose or treat.
Migraine Trail is not a healthcare provider, medical service, or medical device. These tools use information you enter and simplified educational rules. They may be incomplete or wrong and cannot examine you.
- Results do not diagnose, rule out, confirm, or predict any disease, headache type, trigger, emergency, or personal medical risk.
- Do not start, stop, combine, delay, or change a medicine or treatment—and do not delay professional care—because of a result.
- Labels such as “pattern,” “alignment,” “score,” “threshold,” “risk,” or “urgency” are educational summaries, not clinical findings or probabilities.
Discuss symptoms and decisions with a licensed healthcare professional who knows your history. For a child, involve a parent or guardian and an appropriate pediatric clinician.
If symptoms may be an emergency, stop using this site. Call your local emergency number or seek emergency care now. Never wait for or rely on a tool result.
Free three-cycle checker
Menstrual Migraine Pattern Calendar
Map migraine attack starts around three periods and see whether the timing repeats in the recognized menstrual window.
The five-day menstrual window
Days −2 and −1 before bleeding, plus days 1, 2, and 3 of bleeding. Day 1 is the first day of bleeding; there is no day 0.
Enter attack start days
If one migraine attack lasted several days, select only the day it began. Enter migraine attacks rather than every mild headache.
Understanding the pattern
ICHD-3 describes a pure menstrual pattern when qualifying migraine attacks occur only during days −2 through +3 in at least two of three cycles. When attacks also occur at other times, the timing may fit a menstrually related pattern.
These categories require more than calendar timing: the attacks must also meet migraine criteria. Prospective tracking is useful because recalled cycle associations can be inaccurate.
Frequently asked questions
What days count as the menstrual window?
Days −2 and −1 before bleeding and days 1, 2, and 3 of bleeding. Day 1 is the first day of bleeding.
Why does the checker use three cycles?
The recognized timing criterion looks for the pattern in at least two of three cycles. Three prospective cycles also reduce the chance that one coincidental overlap appears repetitive.
Can this diagnose menstrual migraine?
No. It checks attack timing only. A clinician must determine whether the attacks meet migraine criteria and interpret the pattern in your medical context.
Track cycles and migraine together
Log attacks and menstrual-cycle dates as they happen with Migraine Trail.