I have been on ortho tri cyclen lo for about 2 years now, and everything was great up until about 4 months ago. My periods have been becoming more brown, and they also only last 4-5 days as opposed to 6-7 like they used to. I also get brown discharge for several days after my period was supposed to have ended. My doctor didn't seem concerned, but I still am. Sometimes the discharge is very dark, and sometimes very light, and muddy. Does anyone else have this problem?