Why would your period start then stop then start again but be light?

Irregular periods: 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. Thyroid and pcos testing are warranted. There are many options available to help regulate the menstrual cycle. Schedule a visit. If you think you might be pregnant check then check a home pregnancy test.