In my experience of 45 years since being diagnosed, the noises are very bad during any time of narrowing (before my 3 resections). After surgery, the noises are pretty much gone (or should I say, happen more like "normal") If I start getting the loud noises again, that's when I'll know that I'm in trouble with narrowing again. I pray that doesn't happen.
Just another of the many annoying, embarrasing, painful, frustrating things that comes along with this miserable disease.
Good wishes and (((Hugs))) to all my fellow Chrohnies.