Stress does the same thing to me to. When I get stressed my stomach starts to growl and I get major shooting gas pains.
TE Marie, you're absolutely right about taking a deep breath, but it's so hard to remember when you're doubled over in pain. When you take the breath it releases some of the stress for sure. I'm going to start to meditate and see if I can't get rid of some of my stress. Actually, when you start to meditate that's what you're supposed to do, take deep breaths in the beginning of your meditation.
As far as being a nervous wreck, please add me to the list.