Period Flu (Feeling Sick Before Period)
Some people experience flu-like symptoms before their period — including body aches, fatigue, nausea, chills, and headaches. This is sometimes called 'period flu', though it is not an official medical term.
Medical disclaimer
This content is for informational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Dawn Phase is not a medical device. Always consult a qualified healthcare professional with questions about your health.
What causes it
Hormonal shifts before your period, particularly changes in prostaglandins, may trigger inflammation and symptoms that mimic illness. It is not caused by a virus.
Track this symptom across your cycle
Dawn Phase logs Period Flu (Feeling Sick Before Period) patterns and shows you correlations — privately. No data selling.
Start free — no card neededHow to track it
Note the timing, duration, and severity of symptoms each cycle. If they consistently appear in the days before your period, they are likely hormonally driven.
When to see a doctor
If symptoms are severe, interfere with daily life, or you are unsure whether they are cycle-related, speak with your doctor to rule out other causes.
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Log symptoms daily and see how they connect to your cycle phases.
Start tracking free →This content is for informational purposes only and is not a substitute for professional medical advice.