Just a thought

Do you think AF is sometimes late because we're overthinking things and not wanting her to come because of hopes of a BFP? I swear it happens every month to me, I feel like I'm having pregnancy symptoms my period ends up being late so I take a Pregnancy test and get a BFN and BAM my period starts like a day or two later... :( has anyone else had similar circumstances? Right now I've been starting the cycle all over again... I'm 9 DPO and starting to get "symptoms" but this time feels a little different because I have a pulling sensation in my lower abdomen and I've been cramping, but I'm trying to not get my hopes up.