How to start a period

Vanessa
I know is probably odd to ask. But my period was due on  he 24 I tested that evening and it was negative. AF still isn't here. I'm
Possibly going to test tomorrow or Monday. But I have a feeling it's going to be negative. But if my AF doesn't show it feels like a constant battle in my head it slight hope. I've never been late. Not even an hour late! I just want AF to come how can I help it happen?