I used clear blue digital along side a cheap opk. Did I ovulate yesterday?

I got a solid smiley (peak) on clear blue digital opk yesterday 29/09, and started using cheap opk from 28/09. (I started clear blue on 21/09)

I have included a photo of my cheap opk. I don't think these lines go very dark.

First 2tests are from 28/09, then 3rd is from 29/09 when I received my solid smiley on clearblue, and the last one is today. The today's is lighter than yesterday so I ovulated at night or yesterday?

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