Hospital leave & Maternity Leave

Is it possible to request the HL from doctor before the EDD? I am planning to use my unpaid leave + HL + ML + AL before EDD. Belly is getting bigger, feel vry tired to travel back n forth (1hrs+) to office everyday plus my boss keep increasing my workloads eventhough im pregnant, i feel mentally n physically stress at work everyday! I hope i can rest at home before ML/EDD. ???