opk question

Ca
I'm new to TTC and appreciate the advice of a veteran....
According to Glow, I should be in my fertile window with my peak day on Tuesday.  However, I've been taking a first response digital opk and have received a no lh surge result each time.  The glow app keeps reconfiguring my peak day with this data. Should I be worried that I'm not ovulating?   I get regular periods.  

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