During menstruation, I have increased blood flow lasting more than a week, and I feel weak.
Heavy periods lasting more than a week, along with weakness, usually suggest menorrhagia, which can happen due to hormonal imbalance, thyroid issues, fibroids, PCOD, or low haemoglobin. A gynaecologist may recommend iron tablets or medicines to reduce bleeding. Meanwhile, you can take iron-rich foods and stay hydrated to reduce weakness.