Aunt Flow Charting Help!

Question! I usually only actually bleed (like enough to use a tampon) for two days. And then I typically spot very lightly on and off for the next 2 to 3 days. When I say very lightly I mean nothing all day unless I pee 😁 for charting purposes should I say my period is from day one all the way until I stop spotting? Or should I try the days I'm actually "flowing"? Thanks!!!