Ever popped a Tylenol during pregnancy without a second thought? You’re definitely not alone. It’s probably been your go-to pain reliever for headaches, cramps, or that pesky back pain pregnancy loves to gift us. But hold on tight—recent findings published by Harvard’s School of Public Health are shaking things up in the prenatal care world. The study suggests that acetaminophen exposure in utero might raise the chances of neurodevelopmental disorders like autism and ADHD in kids. Yep, that common little pill might not be as harmless as we thought. Check out the full study here.