Have you noticed your periods slightly changing in recent times? Are they more frequent or spaced out? Are they heavier, lighter or have stopped altogether?
This is very common and often the first sign of entering the perimenopause. This is part of the natural transition of menopause and can occur many years before. This is usually due to fluctuations in hormone levels.
There are different ways of rebalancing your hormones which can improve heavy bleeding and remove unpredictability of the cycle.