Baby dust? And question.

Kaytlyn
I was suppose to start the 24th of this month. Still no period and no symptoms for me to start. The only thing that hurts are my nipples. Going to take a test tomorrow morning. But one question. Do you count the day you were suppose to start or the day after? Example: 24th-29th is 6days or is it 25th-29th is 5days missed period?