While in my early twenties, I had no predictable cycle. I had painful, hard periods with barely three days in between. I ended up having a hysterectomy at 23 years old because of the anemia that insued from losing so much blood. I had countless D&C's before the hysteretcomy and birth control pills did nothing to correct the situation. As a matter of fact, they gave me migraines.
I have no idea if there is a correlation but I have read many posts on this forum by people who have had the same issues...so maybe?