The average gap between two periods is around 28 days. If your periods are often delayed by more than a week then you could be suffering from oligomenorrhea. This is the medical term for the common condition of irregular periods. The causes for irregular periods can be many - thyroid disorders, stress, travel, excessive consumption of alcohol or caffeine, etc. Here are some foods that can help you treat irregular periods. Ginger From getting rid of cold to improving digestion, ginger...