Hi there
Well I am not a doctor and even if I were we can't do any diagnosing here on the Internet. You really are going to have to set up an appointment with your gynecologist on this.
But...if it were me I would suspect either some sort of yeast infection or bacterial vaginosis. In researching your question author Gene B. Bishop discusses the different types of vaginal discharge and particularly bacterial vaginosis as : "Bacterial vaginosis is often grayish white and nonhomogeneous."
Hope this helps some and thank you for your question!
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