WFH or HL? Help me.

Hi, im currently 32 weeks pregnant. Im gg for appointment tmr and been contemplating if i should request the gynae to write a memo requesting for wfh. My job requires me to sit down most of the time as im doing front desk. And my back/hips hurt a lot due to prolonged sitting. Even when im tasked for back end job, i can't freely take a break or walk around for a rest. Colleagues and officer will be watching, and it's uncomfortable. But i really cannot stand the pain, and plus the long commute to and fro work makes it worst. Do you think my gynae will help to issue a memo to my company? Im a subsidised patieng in kkh anyway. And i know chances of getting HL is close to 0.