I started menses at age 16, had a normal cycle
for 1 year, bleed almost non-stop (became anemic)
for a year, had normal cycles for about a year after being put Loestrin bc pills then they stopped altogether. I am in good health now, have 20% body fat (which my health teacher said is good), excercise 4-6 days a week and have no family history of fertility problems. Was bulimic for 2 years, but have been at a healthy weight for a year now and still no period.