I still have hope if the digital is negative?

My period is due today. My cycle is 7 days longer than it was last month. I got an extremely faint line on a frer yesterday, at what I guess was 13dpo. My boyfriend is insisting that we test on a digital today. Those words "Not Pregnant" are so heartbreaking!😥. I still have a chance to be pregnant, if it's negative, right?

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