Why are my periods so heavy and painful?
Not a diagnosis: a head start. These are the three drivers most worth checking first, based on what the evidence says gets missed most often.
Heavy is quantifiable
Flooding, clots, or changing protection hourly is medical, not "just you". It also drains iron.
Pain that escalates
Worsening pain over years, pain with sex, bowel pain on your period: endometriosis questions.
The iron spiral
Heavy cycles cause low iron, which causes fatigue that gets blamed on everything else.
Ferritin, full blood count; symptom diary across two cycles
1. Start a two-minute note so the pattern becomes visible.
2. Take the test list above with you so you can explain the pattern clearly.
3. Read the evidence: Estrogen Dominance: The Hidden Cause Behind Most Period Problems · Your Period Problems Aren't Normal: What the Research Actually Says.
Education, not diagnosis, and never a replacement for your GP or pharmacist. Reference ranges and guidance vary; sudden, severe or worsening symptoms need 111, or 999 in an emergency. By Hussain Sharifi · independent, affiliate-free health research.