Support Through Loss Act This bill provides employees with 24 hours of paid leave time each year for an absence resulting from a pregnancy loss or other specified circumstance related to pregnancy, fertility, or an unsuccessful assisted reproductive procedure or adoption match. Employers must notify each employee about the availability of this paid leave and may not discriminate or discharge an employee for exercising or attempting to exercise the right to such paid leave. The bill provides for enforcement of this requirement by the Department of Labor and through civil action brought by an employee or individual. Further, the bill requires specified federal agencies to conduct research and publish information about pregnancy loss and related evidence-based treatment options.