8 days late Negative test

My period is 8 days late and I’ve taken 2 tests. I took one 4 days being late and 6 days being late. They both came back negative, but there’s still no sign of my period. Online said home tests are accurate and if it says im not pregnant, then I’m probably not. If I’m pregnant I wanna know for sure, so I can take proper precautions. What should I do now?