Dumb question maybe?

B

So I’m just wondering if I’m supposed to mark the day I start spotting as the first day of my period? I usually start by just slightly spotting the day before my period and I’m not sure if this would actually be considered the first day of my period. We are currently ttc so I’m trying to track as accurate as possible. Sorry if this is a dumb question. I’m new to the whole tracking my period and ovulation.