Can’t stop eating !

I’m so hungry all the time, but for some reason I’m not gaining weight. I’ve always struggled to put on weight, but the amount I’ve been eating lately is alarming that I haven’t gained weight yet. This is also my first pregnancy that I haven’t been throwing up nonstop in the first trimester, so I just assumed I’d start gaining weight sooner this time. Hopefully it’ll come later when the baby needs it the most. Is anyone else eating everything in sight? What are your favorite snacks? I’m running out of ideas. Thanks!