Does cervical position changes = pregnant?

Germaine • Baby Dust 👼🏻💕 23YO, PREGNANT WITH BB #1
On CD17, I checked my cervical position, it was high, open and soft. So I guess I ovulated. On CD21, I checked my cervical position, it was Med, close and firm. Today on CD23, it feels high, open and soft again?? 😳
What does that mean? Should I BD tonight? Does the cervical position become high, open and soft when we've conceived? 
Furthermore, CD22-23 I've been having mild "cramps" 🤔🤔🤔