What Causes Clumpy Vaginal Discharge Along With Bad Odour Post Intake Of Postinor?

Hello,I saw my last period on the 20th of december 2014-and it ended on the 25th-i had sex with my boyfriend on the 1st of jan and he released in me- I took postinor 2-that same day-and on the 5th of jan-i was having clumpy discharge that smell like cheese and today being 7th-i am bleeding.pls what is wrong with me.