Weak, shaky, and hungry after eating all day?

So I’m 23 weeks, these past few nights when I’m falling asleep I get very aware of feeling weak, hungry, and shaky, with my heartbeat very noticeable. I drink water all through out the day and I’m eating as well, I even have a snack before bed because I’m so hungry and it’ll help for about 10 minutes but then I’m starving again, I’ll drink water to see if that helps but it doesn’t. And when I wake up I feel shaky and starving. Does anyone know what this could be? I never had any issues while pregnant with my first like this.