Headaches before your period are common and are often linked to the drop in oestrogen at the end of the luteal phase. Menstrual migraine usually starts between two days before and three days after your period begins. Tracking headaches for two or three cycles shows whether they follow this pattern, which helps you and a healthcare professional plan treatment.
Why the end of the cycle can trigger headaches
In the luteal phase, after ovulation, oestrogen and progesterone rise and then fall sharply if you are not pregnant. That drop in oestrogen is the most common hormonal headache trigger. Other premenstrual changes can add to it: poorer sleep, fluid retention, cravings, skipped meals and stress. You can read more about this part of the cycle on our luteal phase page.
Types of cycle-related headaches
| Type | Typical timing | What it can feel like |
|---|---|---|
| Premenstrual headache | Days before the period, with other PMS signs | Dull, pressing pain |
| Menstrual migraine | Two days before to three days after the period starts | Throbbing pain, nausea, sensitivity to light |
| Pill-break headache | During the pill-free week | Similar to menstrual migraine |
Only a healthcare professional can tell you which type you have.
How to spot your pattern
Log every headache for at least two or three cycles. For each one, note:
- The cycle day and how many days before or after your period it started.
- How strong it was and how long it lasted.
- Other symptoms: nausea, sensitivity to light, aura, mood, sleep.
- What you took for it and whether it helped.
If most headaches fall in the same few days around your period, that points to a hormonal pattern. Our Try our free period calculator helps you see when the next high-risk days are coming.
Migraine with aura and the combined pill
If you have migraine with aura, such as flashing lights or blind spots before the pain, tell your doctor before starting or continuing the combined pill, patch or ring. Methods with oestrogen are not recommended for people with migraine with aura because of a higher risk of stroke.
When to get medical help
- A sudden, very severe headache, the worst you have ever had.
- Headache with fever, a stiff neck, a rash, confusion or weakness.
- Changes in vision or speech that are new for you.
- Headaches that are getting more frequent or no longer respond to usual treatment.
The first three need urgent care. For regular headaches around your period, a GP can talk to you about treatment options.
Tracking headaches in Bloom Private
Bloom Private lets you log headaches and more than 60 other symptoms on each cycle day. Over a few cycles you can see whether they cluster before your period, and export a PDF report to bring to an appointment (basic PDF free, full report with Premium). The app does not diagnose or treat headaches.
Frequently Asked Questions
Often because oestrogen drops sharply at the end of the luteal phase. Sleep changes, stress and skipped meals before your period can add to it.
Menstrual migraine usually starts between two days before and three days after your period begins. Log your headaches for a few cycles and discuss the pattern with a healthcare professional.
Methods with oestrogen are not recommended for people with migraine with aura because of a higher risk of stroke. Talk to your doctor.