false negatives??? pls help 😥😥

So I was 6 days late for my period and took a pregnancy test that came back negative. Now 4 days later my period is STILL not here. It’s 10 days late and my period is regular and is always on time so I’m just kinda confused... can pregnancy tests come out as false negatives?I’m not stressed/haven’t been stressed and I haven’t been doing anything new hat I can think of so??? What’s goin onnnnnnn