I have having rumbling in the stomach and sometimes funny noises from lower abdomen. These symptoms started after a bout of diarrhea about 2 months ago. Then they were gone for 3 weeks. Again started.I feel no pain, no diarrhea, except at the start, 2 months ago.I have also noticed that this rumbling starts roughly 2 hours after eating a meal and often has a mild pain in lower abdomen, This pain however goes away in 1 or 2 minutes. I also feel very hungry, like stomach is hollow when these sounds happen. What to do?