3rd trimester feeling like the 1st??

I just hit 28 weeks and am starting to feel like I did in my first trimester. Fatigue, loss of appetite but always hungry and I get sick if I don’t eat. Second trimester I was working out and eating all the fruits and vegetables. Now I once again can barely choke anything down but milk and bagels. Not to mention now I have such raging heartburn and indigestion that it limits what I want to eat even more. If I don’t eat enough I wake up in the middle of the night and then can’t go back to sleep so now I have pregnancy insomnia too. Wtf 😩