What cm is normal?

Tristan
I got my bfp yesterday morning and am excited but after a mc in October am super nervous. I have had what I can best described as dull aches in my lower abdomen for about 3 days and then today I had some cm when I wiped. Is this normal? After my mc I am very aware of everything and it scared me that I haven't had any cm until today. Thank you for the responses in advance!!