I didn't know right off hand but after looking it up here's what I found from WebWomb.com...
Creamy, Milky, Lotion Like - FERTILE
Cervical fluid now becomes much more abundant and will feel wet from 2 - 4 days. It can appear either thick and creamy or like hand lotion and will form peaks in your fingertips when pulled apart or can be thinner and look milky. Color of the fluid is white or yellow and the overall vaginal sensation is wet.
Hope this helps!!!