I have been having dark discharge about 2 weeks after my period for almost a year now and it's getting worse. why is this happening?

Irregular periods: Irregular periods are one of the most common problems obgyns treat. Since this is a recurring problem you should be evaluated. Infections, polyps, fibroids and hormonal changes can cause spotting. If there is a concern for pregnancy then do a home pregnancy test . There are many options available to help regulate the menstrual cycle. Schedule a visit.