It sounds like it might be indigestion, or more specifically Gastritis (which I get - & isn't fun)

Bubble feelings or gurgeling sounds from your stomach is usually inflamation or acid related. Gastritis is when the stomach lining is inflamed usually due to diet, smoking, alcohol and pain meds like ibuprophen are usual culprits.

If I were you I would go to the doc to check it, becasue regular antacids like tums can actually make it worse. And if you let it get worse it can make you dizzy, nausous, loss of appetite.