For the past week I have been having brown discharge once heavy but now it has settled down but is still brown. I am due a period round about now but have not had one even though I am on the pill and would usually have one now. I have not experienced any pain but am worried that it could be serious as I have never had it like this before and for this amount of time. Have you any ideas on what this could be or what could be causing this? :confused: