I feel the same way though, you're not alone. I'm hungry every 5 minutes lol.
I'm not sure as I'm only 4 weeks along, but I imagine yes. Maybe it gets better as your body gets used to being pregnant, but I'm not sure. But you do have to eat more every day than you normally would, and take prenatals, because you are pregnant and growing a human being now. Your body is going through all kinds of drastic changes right but I'm guessing it doesn't last forever. If you're still concerned about it I would make an appointment with your doctor and ask him or her.
Does it happen through the whole pregnancy
Everyone gets like this it's annoying but get used to it