crazy emotions, hungry all the time and exhausted

Hi all, I'm in my first trimester, first pregnancy. For the past weeks and abit all I have been is hungry! Not just peckish like hunger pain hungry every hour or two after I eat! And I'm soooooo tired and emotionally I've been pretty okay then today I got home from work and was so tired that i spent about 30 mins crying and sobbing. I then had dinner and got intense heart burn! Today sucks! Does anyone have some good tips on healthy snacking that will keep me full thanks girlies :) ❤️❤️❤️