Testing negative

Brooklyn

Ok gals! So I have a period expected in 4 days. I have gotten anything but negative tests. Haven’t tested in a couple days trying to hold out. Is it possible I can still be pregnant even though I got negatives since two days ago ? I know now some tests aren’t completely accurate until missed period. But a lot of people test before that, (way) before and get positives ? Could I still get a positive or should I lose hope ?