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A 25-year-old female asked:

Missed period lower back&pelvic pain today is day 45 & i got a negative hpt what's the cause? no bc since mirena (levonorgestrel) removal july of last year.

1 doctor answer2 doctors weighed in
Dr. Heidi Fowler
Psychiatry 26 years experience
Reasons: Reasons for missed / late period include: an anovulatory cycle in which no egg is released, marked v or ^ in weight; eating disorder; over-exercising (endurance athletics), stress, travel, significant illnesses, oral contraceptives ; other meds, illegal drug use, breast feeding, hormone imbalances and medical problems (i.e., pcos).

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Last updated May 20, 2021

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