Hunger problems.

It seems like I can't eat enough.

I had a snack right before bed around 10, woke up at 3 starving - had a snack, woke up again at 7:30 with hunger pains - had another snack.

I can't eat large meals because of my morning sickness, but I didn't sleep well because I've been eating all night.

Anyone have tips, or more filling (but still small portioned) snacks??