Rarely have diarrhea.
Rarely have constipation.
With certain foods I have either (or both) stomach/intestinal rumbling and "bubbling" as if there is fermentation.
The rumbling sounds occur usually after eating and at night--kinda sounds like I am hungry, but have already eaten so I am full.
The rumbling sometimes leads to passing wind and then it stops temporarily.
These sounds even occur after drinking water!
Trigger foods: Sodas, sugars, flour… read more
Look up Chronic Gastritis. (Which is what I have) My gastro dr told me that some of us lucky ones can have both, as they go hand in hand as belly trouble goes. You may just have the gastritis itself. Zantac or similar meds help some.
What you are describing is not part of the IBS definition. IBS is defined by constipation and/or diarrhea.
I am exactly the same as you sometimes have cramps when I go to the toilet and sweat but after Iv'e been I am fine glad someone else is like me.... makes no difference what I eat just comes and goes good luck ...also did my travel insurance told them I had IBS and they put my premium ??
Try a light abdominal massage with a little oil in a clockwise motion it helps me