Have had loud rumbling from my stomach for 5 months. Particularly after drinking or eating. Its as though I can feel the liquid travelling downwards, and can predict when the noise will happen. A bit of discomfort nothing severe. No nausea, vomiting, diarrhea etc. No weight loss. However these noises are getting louder and more frequent. Had endoscopy and ultrasound which were normal. Blood tests also ok in November. What could this be? Hiatial hernia seems possible? Obviously I'm scared of worst case - cancer.