I don't know which: Hormones were increased (there are different oral contraceptives). However, in general hormone changes can impact your period. Late period: low body wt, obesity, weight ^ or v, ^exercise, endurance athletics, breast-feeding, stress, illness, eating disorders (bulimia or anorexia), anovulatory cycle (no egg released), travel, perimenopause, just starting menstruation, hormone irregularities. >.
Answered 9/11/2013
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A doctor has provided 1 answer
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