Before Menstruation Cervical Mucus Any Of You Experience No Cervical Mucus When Expecting Menstruation?

Any of you experience no cervical mucus when expecting menstruation? - before menstruation cervical mucus

I'm a day late, and I have absolutely no cervical mucus / discharge. This law is just before menstruation? because it seems that I spend almost every month, after ovulation.
However, I fear that my last period 2 December was and is still no sign. I had unprotected sex on 20 and 21 December and now I'm kind of tension.
My breasts are swollen, they are not just a little bigger.
What do you think? =)