So tired! 😪😴

Im 27 weeks and for the past week i've switched from being an insomniac to a complete sloth! Every two hours or so I feel like I need to take a nap and if by some miracle I dont fall asleep, im in bed by 6 or 7. When I am awake, all I want to do is eat, when before I hardly had an appetite at all. 😕 I dont understand the quick switch, i'm barely out of the 2nd trimester.