Oh yes, pregnancy brain is so real and I totally doubted it too before I experienced it myself! When I was around the same stage with my second child, I literally forgot my own handphone number halfway through telling someone, and just stood there blinking. It is not you switching off or being careless, your body is genuinely working so hard right now that your brain just has less bandwidth for everyday things. Be kind to yourself and just laugh it off when it happens, because it does get a little better as you settle into the pregnancy. You are doing great, mama, hang in there.