AF late regular 26 day cycle?

TTC cycle was due Tue. Apr. 6th always on time BBT still high 98.83 today not a lot of cm, cp very soft BFN yesterday mild cramping Apr. 5th very light not like AF. No spotting no nothing no sore they usually get sore 4 to 5 days b4 AF not sure if this is all in my head but my mouth keeps filling up with saliva. Someone please help have u had BFN 15/16 DPO then a BFP?