Am i crazy for thinking this??

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My first ultrasound is scheduled 4/7 I should be 8 weeks by then. This is my second pregnancy which so far has been a bit different than my first pregnancy symptom wise. But call me crazy I can’t get the thought out of my head that something will be wrong the day of the ultrasound. And some days I’m like oh I’m fine and others I can’t get it out especially the days where my symptoms go super light or MIA. Please tell me I’m not the only one who’s thought this