Salam! Sayang, GDM (Gestational Diabetes Mellitus) classes memang penting tapi aku tak pernah join sendiri, so tak sure exactly apa yang dicover dalam kelas online tu, biasanya memang they cover diet, blood sugar monitoring, sama exercise tips untuk manage gestational diabetes during pregnancy. Best move is maybe WhatsApp the instructor or ask in your antenatal clinic apa exact topics were covered so you can catch up, or see if ada recording available; doctor pun boleh brief you on the key points yang kena tau, so jangan risau!