What Causes Abdominal Cramps And White Vaginal Discharge Post Intake Of Nordette Pills?

hi had unprotected sex dec 13 took nordette ECP 2 hours later 4pills and then 4pills after 12 hours. Have experienced breast tenderness abdominal cramps and lower back pains since then but no withdrawal bleeding. 1st day of my last period was Nov 28. Have white milky discharge no smell for the past 2-3 days.. but no withdrawal bleeding