Help!!! Opk flashing smiley then static same day

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Hello . I never have used ovulation kits till now . I had a miscarriage five weeks ago and decided to use a ovulation kit to track everything so I can get a better idea of my cycle now .

I had a plain circle yesterday which meant low fertility…

Early this morning I had a flashing smiley..

This afternoon I had a static …

Any idea what is going on ??

Is this normal ??

I had sex Wednesday and today is Friday …

What do you think ? Any Chance of pregnancy??