What should your cm be like after you conceive?

🌹Jackee🌹 • Mother and stepmother to 5 amazing kids! Im married to the 6th kid lol, we are ttc #6 for our family!.
I have recently started monitoring my cm for a couple of weeks now and am 3 dpo. I am way too impatient to wait for af to test and don't want to use the test I have just yet. Could I tell if I'm pregnant by checking my cm? What would it be like?