It seems to be peptic ulcers or gastritis. You should try over-the-counter prilosec.
Only swallowing air doesn't cause pain.
You may have peptic ulcers, acid reflux,
cancer but you are too young for it.
As I told you, try over-the-counter prilosec that is proton pump inhibitor and inhibits acid production.
If it doesn't work, you should see your GP.
That's good. Your symptoms could be due to swallowing air. If you develop pain, heartburn, nausea, weight loss, or a decreased appetite, you should try it.
Are you satisfied with my answer?
If you have weight loss, it could be serius.
You don't need to worry about it.
Are you still worried?
If you worry, you should see your GP.
You don't need to worry.
That's what I can say.
Are you satisfied with my asnwer?
Okay. Take care.
Anxiety also causes burps.
If you have it
Try to be relaxed.
Manage your stress.
Meditations, exercises, and so forth.
If you still have anxiety, you should see your GP. S/he may prescribe selective serotonin reuptake inhibior to you.