I have official type meeings that I have to go to every 6 months. one thing that helps me alot is taking relaxing music to listen to before I go into the meetings, I also get to the meeting place 15 minutes ahead of the scheduled meeting time so that I have time to relax and visit the rest room if needed. and then during the meetings I check in with myself and if Im not feeling comfortable I excuse myself and go to the rest room. If anyone after the meeting asks what happened I tell them I had the flu recently and needed to get to the restroom. No one is going to question someone needing to throw up from the flu. take care.