Trying to track ovulation - help!

Avery
When I'm starting my period, I usually spot for a day or so before - sometimes I'll spot and then it'll stop for a day, spot again and then period.. It's light pink or brown and then I will start getting more heavy / red color..
So I was wondering if I should my put my period start date on here for when the spotting starts or when the flow actually starts? Also, sometimes it'll end for a day and then I'll spot a little the next day - so not sure I'm marking the right end date
Hoping this will better help me know when my ovulation window truly starts/ends. 

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