Late AF but BFN

Nicky

Hey all, so AF is about 7 days late. I didn’t want to disrupt my family plans over the holidays so I waited till today 7 days after I was supposed to get my period. Got a BFN. On day I was to get AF I had all the cramps but nothing else. Had lots or pulling and twinging in lower abdomen the past 2 days. my boobs been sore but today much more than before. So BFN really confused me. Has this happened to anyone else who turned out to have a BFP later?