So I had Mirena removed on 3/24 AT showed on 3/28 and only lasted 2 days. Then today I went to the bathroom and had brown discharge when I wiped. I know it's old blood but what could have caused it. AT usually turns brown on the last day not 4 days after :/ and should I consider this as part of AF when charting or what? My midwife told be that any type of blood is considered a period. This my first time charting when TTC hoping to be more successful. TIA!