6 days late BFN... But pos OPK???

Ashanti

My cycle is regular 32 or 33 days nothing more. I am on CD 39 which is 6 days late. I had a BFN on an HPT two days ago at 4 days late. Yesterday I got a positive OPK and today I checked my cm and it’s white and stretchy and there is a lot of it. Can anyone tell me what this means ? Could I be pregnant? Has this happened to anyone else before? *excuse my nails* 😬