I also suffer from the Crohn's tummy grumbles. One time, it was so loud that my stomach woke my husband up from a deep sleep. He thought someone was breaking in. So that's when I started drinking Aloe Vera Juice. Not derived from the same part of the plant that the gel is from. It tastes pretty gross but if you can drink 1/2 cup - 1 cup then within about
1/2 hour you'll feel a significant improvement and it litterally aleviates all noises. You'll find that it relieves the gas so be sure to step outside for a little while.
If you find that it works for you and you begin to take it on a regular basis then remember to follow up with probiotics since Aloe Vera Juice tends to work a bit like an antibiotic.. destroying bacteria in it's path. Replacing your digestive tract with good bacteria (probiotics) maintains proper digestion. Also, avoiding yeast and sugar is extremely important. I havn't completely illiminated all yeast or sugar from my diet but I limit those ingredients to 2-3X a week instead of everyday. I hope this helps!