What Causes Excess White Discharge With Foul Smell And Blood Clot From Vagina?

my LMP was 1st decmber 2010.its been few days,white matter has been dischared from my vagina in excess..n its not foul smellin ...no pain...but i feel like itching..n m conscious abt it ..i ve a good hygiene.but for now i found out ,white matter along with blood clott n ..mucous type matter inside my vagina ..the more i take it out ,the more it comes ...n m so paniced..is it because of ovulation or any pathology ?wat should i do?