I feel for you, this stage can be really tough and draining. What helped me was eating small frequent meals even if it's just crackers or plain rice, staying hydrated with sips of water or ginger tea throughout the day, and lying down for a bit after eating since sometimes movement makes it worse. Some mums swear by vitamin B6 supplements or ginger, but you should check with your gynae at KKH or polyclinic about what's safe to take and whether the nausea is manageable or if you need extra support. Hang in there, it usually gets better after the first trimester, though I know that doesn't make today any easier.