4 days late and light spotting

Today is the fourth day that my period is late. This sound maybe a little weird but whenever my period is late I check if I’m getting my period by sticking some toilet paper into my cervix to see if there’s any blood?! Today when I did that it was light pink so I thought my period was going to start. But nothing happend and the light spotting also went away, I did take a test but it was negative. Has anyone else experienced this?