What gives?

I'm 9 days late now , I've taken 5 pregnancy test and all negative. This happened when i was pregnant with my first , but with my second I got positive results at like 4 days before my missed period . I'm so confused . With my daughter the blood tests came back negative until like 2 weeks late so I'm warey of getting a false negative there too. Until the stress of this, I wasn't particularly stressed out about anything to make me late and certainly not 9 days ! Outside of being pregnant the most my period was ever late was 2 days . I just want either blood to start flowing or a positive ! I hate this waiting game .