Anxiety disorder and gastrointestinal problems

Hi, I wanted to ask what the connection or distribution between anxiety disorders and digestive issues is like. I feel like my anxiety level explodes whenever I have stomach or gut problems — and on the other hand, situations that cause me high tension seem to trigger digestive issues as well. Is that common?

I’ve learned that when my anxiety level is high, I first need to regulate my body. Easier said than done...