Holy cow my cervix feels closed !!

So I've been checking my cervix I've had three vaginal birth so it's always felt pretty open. Today I checked it and it felt closed. I am 6 dpo and yesterday it was open. It's pretty significant difference from the gaping hole lol that is now my cervix thanks to my children.

But if its closed is that a confirmed pregnant symptom???? Waiting to test few more days !