I had 2 small blood clots the size of a rice crispy piece and one day of brown discharge around two weeks ago around the time of ovulation. For the past 5-6 days I've been having cramping in my lower back and lower abdomen and this is also the 3rd day that my nipples have been really sore and I've never had sore nipples ever. I'm not late for my period just yet but I've also been having lots of clear, white, and yellowish discharge.