Gastroenteritis: This is the most likely diagnosis, as abnormal bowel sounds are a common symptom of gastroenteritis, which is an inflammation of the gastrointestinal tract, usually caused by a viral or bacterial infection. The condition often presents with diarrhea, vomiting, and abdominal cramps, in addition to the abnormal sounds.

Irritable Bowel Syndrome (IBS): IBS is a disorder affecting the large intestine, causing a variety of symptoms including abdominal pain, changes in bowel movements, and abnormal bowel sounds. It's a common condition that could explain the symptoms.
Inflammatory Bowel Disease (IBD): Conditions like Crohn's disease and ulcerative colitis can cause inflammation in the digestive tract, leading to abnormal bowel sounds among other symptoms. These conditions are less common than gastroenteritis but are significant due to their chronic nature and potential complications.
Food Intolerance: Intolerance to certain foods, such as lactose or gluten, can lead to gastrointestinal symptoms including abnormal bowel sounds. This is a relatively common issue that can cause significant discomfort.

Intestinal Obstruction: Although less common, an obstruction in the intestine can cause severe abdominal pain, vomiting, and abnormal bowel sounds. This is a medical emergency that requires immediate attention.
Appendicitis: Inflammation of the appendix can cause abdominal pain, fever, and changes in bowel sounds. Appendicitis is a serious condition that requires prompt surgical intervention.
Mesenteric Ischemia: This condition involves a reduction in blood flow to the intestines and can cause severe abdominal pain, abnormal bowel sounds, and potentially life-threatening complications if not treated promptly.

Celiac Disease: An autoimmune disorder where the ingestion of gluten leads to damage in the small intestine, causing various gastrointestinal symptoms, including abnormal bowel sounds. It's less common than other gastrointestinal issues but important to diagnose due to its specific treatment requirements.
Whipple's Disease: A rare, systemic bacterial infection that can cause malabsorption, weight loss, and abdominal symptoms, including changes in bowel sounds. Due to its rarity and nonspecific symptoms, it can be challenging to diagnose.
Ehlers-Danlos Syndrome: A group of disorders that affect connective tissues supporting the skin, bones, blood vessels, and many other organs and tissues, potentially leading to gastrointestinal symptoms including abnormal bowel sounds. This is a rare condition with a wide range of symptoms.