To describe women's experiences of perinatal obsessivecompulsive disorder (OCD) as written in their blogs. Study Design and Method: This qualitative descriptive study examined perinatal OCD blogs identifi ed using Google search engine. Krippendorff's thematic content analysis method for qualitative data was used. The unit of analysis included segments of the bloggers' descriptions of their perinatal OCD. Clustering and dendrograms were used to group the data into themes. Results: Forty-three different posts from women in the United Kingdom, United States, Australia, and South Africa were analyzed. Five themes were identifi ed that described women's experiences of perinatal OCD as told in their blogs: (1) Starting to tighten its grip during pregnancy, (2) Keeping horrifi c secrets all to themselves, (3) Tortured with terrifying images and thoughts, (4) Driven to compul-