What a wonderful, encouraging post! I'm glad you were able to make the trip to the wedding. You should be very proud of yourself!! I would suggest beginning a journal and writing down everything you remember from the trip. That way, if you experience any setbacks, you can look back at the journal and be reassured.
Try EMD (Eye Movement Desensitization) for the IBS. It got rid of mine. Find a psych that does the EMD.
Also, it sounds like you did some worrying on your trip. It's quite normal, I do it too. But we need to remember to try and stay in the moment. Keep your eyes and mind on things and people around you. Again, congrats on making the trip!!
Generalized Anxiety Disorder
60 mg. Prozac, Ativan as needed.
"Nothing makes us so lonely as our secrets." Paul Tournier