Mjbrown basically gave you a good rundown of your options in my opinion. For me talk therapy worked the best combined with an SSRI. Some people like to go without medication, others do not; it is a personal choice and there are both pros and cons to each avenue of approach in my opinion.
Try therapy first. Meds last. They'll still be there.
Anxiety can definitely cause digestive problems. However, it is best to see a dr. to first rule out any physiological cause. Your dr. can then recommend a treatment plan for your anxiety - which might involve talk therapy, diet/exercise, medication (anti-anxiety meds / antidepressants), or a combination of all three. I had severe irritable bowel symptoms associated with panic / anxiety, that are now under control with my current treatment (lexapro, xanax, therapy, and exercise).
Hope this helps..