Pregnancy fatigue is real, especially by the third time around when your body's already been through it, so you're not alone in feeling this way. The nausea and loss of appetite can make it even harder to keep your energy up, which becomes a bit of a cycle. That said, since this pregnancy feels quite different from your previous two, it might be good to bring it up with your PD or gynae just to rule out things like low iron or thyroid issues, which can make the tiredness feel heavier than normal pregnancy exhaustion. In the meantime, try to eat small frequent meals even if you're not hungry, and don't push yourself if your body's telling you to rest. Hang in there, it usually gets a bit better after the first trimester.