A menstrual cycle is, by definition, an ovulatory cycle in which ovulation is the main event, and progesterone is made. Any other kind of bleed is either an anovulatory bleed or a pill bleed.
Furthermore, progesterone (which can only be made by ovulating) is important for general health, and is not just to make a baby.
Successful treatment of heavy periods relies on identifying an underlying cause such as hormone imbalance (low progesterone), adenomyosis, or thyroid disease.
