A member asked:

43 days late and negative pregnancy test. thyroid problems but on medication. what else could it be?

A doctor has provided 1 answer

Menstrual: irregularities are not uncommon. Anovulatory cycles are one common cause. You may consult this site for more information on this subject. If you miss more than two periods, it may be prudent to see your doctor. http://www.nichd.nih.gov/health/topics/menstruation/conditioninfo/pages/causes.aspx

Answered 7/10/2014

3.9k views

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