I'm almost 36 ttc for the first time, before ttc my periods were very regular every 25 days, and would last 4-5 days
, but since ttc (Feb 2011) my first period
came 10 days
late, it was a normal period
however the next one came 18 days late and im not even sure I can call it a period it's been very dark discharge and light a panty liner does the job, and it has lasted 15 days and counting, I tested for pregnancy 4 times and negative. Any idea what could it be?