Light brown discharges

Generally small amounts of brown/dark blood at the beginning of the period does not have a clinical significance. Brown indicates dried blood, so this occurs when you have some small amount of bleeding before your period really starts. When your period starts the fresh blood pushes the dried blood out.

If there are heavy amounts or this happens between cycles or for days during menstruation this can indicate a problem, but generally it is a common occurrence and is perfectly natural.