Silly question?

La

So I don’t think this is my month. I’m pretty sure of that... as my period is due in 3 days and I keep getting negative tests for the past like 5 days.

However, I have some lighttttttt spotting today. I want to get the charting right so what do you count as the first day of your period!?! From the day you start spotting or the day it’s clearly your period.

Because some months, for some reason, I do spot a little, then it stops, and then I actually start my period days later.

This sounds really ignorant because I’m kinda clueless in terms of doing things right.... I just started charting for August and used ovulation strips. I have been ttc about a year and had one miscarriage. I just want to be accurate with my charts. Especially if I end up needing to take them to a doctor.