I have had the same dark brown discharge after my period as well. However, mine has lasted a week and is still occurring. I have been on the OrthoEvra Patch for 3-4 years now, and this has never happened for this prolonged of a period. I always have a day or so of "old blood" but this is different. I have also heard it could be a sign of pregnancy, however I just stopped my period 2 weeks ago and a store bought pregnancy test wouldn't show anything yet. Any ideas?