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A 23-year-old female asked:

How lng after a missed period do u take a pregnancy test? period 3 days late usually stay on 4 days. what other reason for a missed period?

2 doctor answers7 doctors weighed in
Dr. Gurmukh Singh
Pathology 49 years experience
See below: Menstrual irregularities are not uncommon. Anovulatory cycle is one cause. See the website below for more info. Home pregnancy test is usually positive 4-5 days after a missed period. http://www.nichd.nih.gov/health/topics/menstruation/conditioninfo/pages/causes.aspx.
Dr. Heidi Fowler
Psychiatry 25 years experience
Missed Periods.: Reasons for missed/late periods: low body weight, obesity, marked weight ^ or v, over-exercise, endurance athletics, breast-feeding, ^ stress, illness, eating disorders (bulimia or anorexia), anovulatory cycle (no egg released), travel, hormone irregularities, drug use, meds (i.e., birth control) or medical problems (i.e. Pcos). #1 reason is pregnancy.
Dr. Marsha Davis
Internal Medicine 28 years experience
Take test as soon as period is missed
Apr 14, 2014

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