Depressed

I feel really depressed don't know if it's due to pregnacy but i just feel bad I even  feel this way and how I'm really lazy now that I'm pregnant. It's so hard for me to want to go to school not only because of lack of motivation but putting my health first and not leaving home starving until I find something I want to eat . And I just feel like no one understands what I'm going through . Like my family didn't feel like that when some of them were pregnant so they don't understand or try to.