Why is my stomach making these loud noises?

Like whenever I go to bed, I hear at night these loud stomach noises or when I'm waking up they are still there but as the day continues they're gone. You can only hear them very loud at night and at morning. I want that to stop because I'm still going to school and it's causing aniexty. Like I'm afraid of sitting in a silent room because I might think that everyone will hear them and think she's either farting or she's disgusting. I know lots of people have it but maybe I'm just focusing on it too much. :/