This month my period was 12-13 days late and lighter than normal. In the 2 weeks leading up to my period i experienced light to moderate cramping on and off and lots of white discharge. Now after my light 4 day period i still have tons of discharge ranging from white to kinda pinkish brown and my moods have been extremely unstable. I took home pregnancy tests on day 3 and day 9 of being late with negative results. I started on a thyroid medicine a little over a month ago so i got my levels checked at 7 days late but i was told everything was where it was supposed to be. Should i still be concerned with this abnormal period? Before this my periods were completely regular with a 31 day cycle.