7 days late... negative pregnancy tests?

Hi all,

This is the first time I’ve ever posted on here, so please bear with me.

I came off contraception 2 years ago and have been fairly regular every since (sometimes being 3 days late or 3 days early, but that’s rare and it’s always a max of 3 days either way)

I’m currently 7 days late, with no spotting or anything. I took a cheapie test 3 days late and it was negative and repeated it yesterday, but the test was faulty.

Has anyone had a similar situation? Could I be pregnant even with a negative? Would love to hear your stories and outcomes please.

(I haven’t had any symptoms that I’ve noticed, perhaps some nausea but I have a stomach problem which could be the cause of that. I was also previously checked for PCOS and endometriosis and am clear)