What Causes Wetness And Thick Creamy Vagina?

I TOOK POSTINOR TWO 10HRS AFTER SEX AND I HAVE NOTHINK WHICH CAME OUT INSTEAD MY VAGINA IS WET WITH THICK CREAMY I HAVE CHECKED IF I AM PREGNANT UNTIL YESTERDAY AND I AM NOT...I M SUPPOSED TO BE ON MY PERIOD BY 18th ..what is this thick cream..i had no simptoms after taking the medicine