Many reasons: Part of the answer depends on how long this has taken to get to 10 days earlier. If once and sudden- usually due to hormone changes from stress or not ovulating this month. If over many months-usually due to menstrual hormones resetting to new cycle or due to uterine abnormality which would need a doctor to determine
Answered 12/18/2016
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A doctor has provided 1 answer
A doctor has provided 1 answer
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A doctor has provided 1 answer
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