Is 'pregnancy brain' really a thing? And does it happen this early? (I'm 6 weeks) Cause lately, I keep making myself look like a real idiot! I swear, every time I open my mouth, I use the wrong word, or the word I want just doesn't come to me, or I switch prepositions like "in", "at", "on" and the sentence doesn't make sense. I also said Wednesday instead of Thursday in an e-mail, causing a parent to come to the school to see me when I wasn't available. I feel like I should just stop talking!