One time sex a day before most fertile day. Creamy cm only. Chances of pregnancy?

So I am a day before my highest peak day, I had sex and he came inside me, I barely had much cm today either or any for this cycle so far. I had ewcm last cycle but none this month. What's the chances of me getting pregnant with sex once and very little cm? Because sperm need ewcm to help bring the sperm to cervix cause creamy cm is pretty much toxic to them I guess. Help me please