Late Period: If you have missed your period for 31 days with negative home pregnancy tests then you should not be pregnant from prior to the missed period. Dark brown spotting is usually blood. 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), travel, significant illnesses, oral >.
Answered 11/16/2013
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