What is spotting? how much blood is considered spotting? i have a period coming on march 3rd and i have brown discharge for the past 3 days.its light

Spotting = bleeding: Irregular periods are one of the most common problems obgyns treat. If this is one time problem it usually resolves on its own. If this is a recurring problem you should be evaluated. Infections & hormonal changes can cause spotting. There are many options available to help regulate the menstrual cycle. Schedule a visit.