Advice needed on Clearblue digital ovulation

Babybluebelle
So I'm using the digital ov tests. I got my flashing then solid smilie. We bd throughout. 2 days later I got some cramping do I don't know why but I did another digital Iv test as the pain felt ovulation like. I got a solid smilie straight away. Wtf? I did test with a diff holder that time but how can I get 2 solid smilies within 4-5day?
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