I'm not sure about the first three discharges, consult a MD for that. But the fourth brown discharge
, could be blood. I have the same problem, usually just before
my period starts. Occasionally after. But I spoke to my OB and he told me that it is dried blood. Sometimes your body, especialy people with irregular periods, have blood that dries around the cervix and that discharge is finally releasing it. It is always good to consult your physician for any questions like this.