understanding anxiety

Christina • FTM mommy to a beautifully stubborn baby girl, firm believer that no matter how you feel, your flawed with grace and beautifully broken.
How do I get my better half to understand the severity of my anxiety and fear of things?? Today he took me out to the local paintball field and said it's ok I'm not gonna make you play. So he goes out and plays saying if I want to come watch I can grab a mask, sign the waver, etc. and come watch him. But he doesn't get that dealing with people and being in any environment that I don't know scares the hell out of me. He just got super mad because I'm not going out to watch him... and it upsets me because something as simple as being out there to watch him just a thinking about it scares the living crap out me and would bring on a panic attack... I'm working on it and trying new things and stuff but it's not exactly going so well...