What Color Is Your Cervical Mucus Right Before Your Period What Should CM Be Like Before Your Period Is Due If You Are Pregnant?

What should CM be like before your period is due if you are pregnant? - what color is your cervical mucus right before your period

I am TTC and my period is expected to commence soon. My cervical mucus (CM) is the same as always before my time, not much of it and a little milky / sticky like. CM: What will happen as when you're pregnant? Thanks for the help!