Could this be an early sign of pregnancy? Extreme dizziness today with cold sweat, almost blacked out!

I’m around 6DPO and today for the first time in my entire life I almost fainted... it was the most scary experience. It started with feeling super dizzy and then blurred vision, and buzzing around my ears and cold sweat.

I did a test this afternoon and it was a no.

Has anyone experienced this before finding out you were pregnant? Could this be a sign??? I’m freaking out

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