Negative pregnancy test but no period

Jazmin

I’m sorry if I’ve posted this in the wrong group I’m quite new on here. So I took a pregnancy test yesterday because my period was 4 days late and it’s never late, however it came back negative. I’ve been getting some cramping here and there but no nausea or any typical early pregnancy symptoms apart from sore boobs and my period has still not started, I will be 6 days late tomorrow. When should I test again? And if I get a negative again what should I do?