My stomach keeps making loud noises, especially when I'm just a little bit hungry. Is there a way to stop this?

Yes. Eat balanced frequent meals, and most likely your problem will improve.
Eat!! Hunger causes increase digestive juices to be secreted and increased peristalsis which together can lead to those stomach noise. So eat and relax.
Simethicone. You might try one of the over-the-counter products with simethicone in it. It reduces the gas in your stomach, so you may not have such noisy bowel sounds.