Creamy CM is nonfertile, and the timing of it in your cycle varies from woman to woman. I get it shortly before my CM turns to eggwhite like CM (which is fertile) and I also get it a few days DPO, for the rest of my cycle until a few days before AF. It's different for everyone, though! The best way to know what it means for you and in your cycle is to track it daily and record in Glow or on your chart for several cycles, until you can detect your own body's CM patterns. Baby dust!