I started taking novelon from the 10th day of my cycle as I had missed taking it before. Today is the 5th day after the last pill. I'm having dark discharge since the 2nd day of stopping the pill and yesterday there was dark red discharge and today it's dark brown, almost black. Generally before periods I get dark brown and black discharge 3-4 days before having periods. The symptoms I notice are exactly the same I get before periods. As I started my medicine late, is there any reason to worry about this? And, are there any chances of pregnancy?