Please help :)

Ok so I’m in this club for school that requires us to go to outside of school commitments (model UN) however I get sooo anxious for these, I have had anxiety in the past and for some reason anticipating these after school commitments make me feel sick. I

Enjoy being there but I just get sooo nervous and idk if it’s worth it to go. The work associated with these things is a LOT and idk if I truly like this club or if I’m forcing myself to do it bc it’s a good opportunity idk help plz sorry if this makes no sense