im having dark brown discharge over four days after my period ended, I started taking the contraceptive pill 'Microlite' on the day my period started which was the 19th of feb and the period ended on the 24th, since then ive been having dark brown discharge which is quite light constantly and am trying to figure out what it is.I take the pill at 5 in the evening and have never missed it only been around 20mins late once. Ive had this kind of discharge before about a day or so after my period be never for this long :( any suggestion as to what it might be