I am 2 months pregnant, and in the army. I wake up everyday at about 5:15, go to formation, do some (mild)?

Exercises, I'll get back to my room around 07:00 and have to be at work at 9:00. I am stationed in Korea so many single soldiers(unmarried) cannot have a POV(Personally Owned Vehicle). So I have to leave at about 8:30. I work from 9-5 and during work I am so sleepy and hungry all the time. But when I get food in front of me I eat like a bird, and that upsets me because I am hungry again about 30 minutes later. When I finally get home I cant go to sleep. I wake up all through the night, and I become very restless. I am so sleepy all the time to the point where I dont even feel like combing my hair, cleaning, etc. I've never been this lazy,and the ARMY sure isn't letting me be lazy. Anyone have any advice.