Hey there, you asked about the bowel sounds but did not mention any pain or other problems so I will give you the normal answer........
Loud rumbling or gurgling from within the abdomen (“stomach growling”) may reflect the normal actions of the stomach and intestines to propel food through the digestive tract (called peristalsis). Interestingly, the exact source of bowel sounds is uncertain, but they are thought to occur as gas moves about with or without the muscular contractions of the intestinal walls. The stomach and intestines move food along from top to bottom by the process of peristalsis: The tube-like small intestine or large intestine squeeze in an organized, sequential fashion to allow digestion to occur and to keep the intestinal contents moving along. Often air and liquid are mixed up and rearranged in this process, causing odd noises to be audible. Reference: Understanding Medical/Surgical Nursing, Williams and Hopper
Hope this helps answer you question. Take care and keep posting.