Parent mental health challenges in the postpartum and early parenthood have profound implications for parent, child, and family well‐being. Little research has focused on postpartum mental health challenges and barriers to help‐seeking among queer birthing people, including members of this community who may be particularly vulnerable to mental health difficulties, such as queer cis women partnered with men, trans/nonbinary parents, and queer parents who are young, low‐income, and/or of color. This mixed‐methods study of queer parents (n = 99), all of whom were assigned female at birth (AFAB) and gave birth to a child within the past several years, explores parents' postpartum mental health difficulties and perceived barriers to seeking help. Using a structural stigma framework, this study found that participants reported high rates of postpartum mental health difficulties (89%) and reported various barriers to seeking support including fears of discrimination and being deemed “unfit” by providers, which might lead to child welfare system involvement. Young parents and low‐income parents were particularly fearful of child welfare system contact and potential child removal. Factors that encouraged help‐seeking (e.g., desire to be a good parent; partner pressure to seek help) and implications for family practitioners are discussed.