Period Question - Maybe TMI

Ka
So it's 10.40am here in the U.K, i woke up a few hours ago with no AF but she has just began now, brown and light ATM. My question is, do I class today as day 1 or tomorrow as she wasn't here first thing? 
Here's to month 5 of TTC 🙄 going to try the "egg meets sperm method" this month! 

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