I'm a relatively new diver (about a year) and absolutely hooked - in the middle of NAUI Advanced and Rescue classes now. Unfortunately, I've just been deferred as a diver due to recent changes in my previously asymptomatic mitral valve prolapse. Anyone been through anything similar? How'd it turn out? I'd love a little reassurance; the thought of being unable to dive again is causing more chest pain than anything my mitral valve has done.