18 days late! what the...

ka • 👫🏻❤️

I am 18 days late...all tests negative. last time i tested was 4 days ago. Ate a taco just a minute ago now i feel sick and i just wanna lay down right now! Is it possible to get a positive if i test this weekend or next week? No sign of af at all this month and no positives so far... killin me here!