Additional Study Information: Our team is looking at the relationship between a mother and her baby to understand how different prenatal and infant experiences affect a baby's brain development. Specifically, we are looking at maternal immune activation (MIA) and how prenatal exposure to MIA can affect a baby's development. For our study, we ask participants to come in for up to 3 prenatal sessions where we collect blood samples, collect saliva samples, and measure your vitals and fetus's heart rate while you play a computer game with us. We also complete an MRI of your baby after they are born and have a few play sessions with you and your baby when they are a bit older. We provide transportation to and from all visits, and compensation for this study is up to $1110.