Perinatal mental health challenges are common, affecting up to 1 in 5 people during pregnancy, post-loss, or after childbirth. Among the most frequent conditions are perinatal anxiety, depression, and obsessive-compulsive disorder (OCD), though PTSD, bipolar disorders, and psychosis can also be triggered by perinatal experiences. Perinatal anxiety may include constant worry, panic attacks, or racing thoughts, while depression can cause persistent sadness, irritability, loss of interest, and fatigue. Perinatal OCD often involves intrusive, unwanted thoughts—often about infant harm—and compulsive behaviors aimed at reducing distress. These conditions can overlap, are not a sign of personal failure, and are highly treatable with therapy, support, and sometimes medication. Early recognition and care make a significant difference in recovery.