I went through stages of bleeding irregularly and for several weeks at a time sometimes, and it can be a worrying time. I went through various tests, ultra sound which only showed small fibroids, and a tilted womb, after the doctors found "nothing seriously wrong", they said it must be "stress"!
Strangely, having that acknowledged by an "ordinary doctor" somehow allowed me to be absolutely open about all the stress i was going through, especially to my partner and grown up and young children.
With help and advice from friends i started a process of saying "no" to demands made upon me, esp from family, which was an extremely difficult process for me to do, and listening to my body's needs.
It is almost finding the staring point on every level from which and where to start with dealing with the erraticness and uncontroleable loss of one's life force ie. our blood,
and finding a point where you start to feel "comfortable" with the unpredictability of these changes. Going with the "flow", and trying not to worry about it.
I remember taking wild rasberry leaves to help with exessive bleeding, also ladies mantle, which balances it all, and everthing i could eat and drink that replaced the iron levels.
It is strange now, that that episode seems to be passing, very hard time, but i leaned so much in so many ways. Hope any of that may help.