Has a digital ovulation test ever not picked up your LH surge?

I'm on day 10 of the blinking smiley šŸ™„ a couple days ago I had tonnns of watery CM and it was almost ewcm but not quite. I was nauseous, had cramps on one side, headache and everything. Is there a chance that was my ovulation and for some reason it just wasn't picked up? I'm confused please give me your opinions and experiences! I'm going on 11 days of just the flashy smile. Next month I do plan on using the strips you read yourself, BBT, as well as cm and cpĀ 

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