Fingers crossed

2 days late 😀! Fingers are crossed Cervix is super high with lots of mucus. Had a super faint squinter that was questionable two days ago followed by yesterday's test that was negative. There are 5 females in the house that are of the menstruating age. The theory going around is maybe one of their cycles is throwing me off. However no one has moved out or in so I think my body should be used to this. Plus I am never late. Any thoughts?