In August I got my period two days late, on the 5th. It lasted for 6 days as usual then two days later I had spotting for two days. Inseptemeber I got my period on time, on the third. It lasted for the usual 6 days, but I had light spotting for three days after. This month I got my period three days late, and it only lasted for four days being usually lighter. Today I started having brown spotting. Does anyone have any idea what could be happening?