So to start off, i know swimming is his number 1 priority and i'm totally okay with it.

My BF and I had an argument last week that turned nasty. We weren't going to break up but he said a few hurtful things. I have very bad anxiety and no matter how many times he tells me everything is okay and we're all good, I can't shake the feeling that its not (i know its my anxiety). 

He says he doesn't need the stress of arguments as he is a few days out from his major championship that leads to the olympics. I just want advice on how to manage relationship anxiety as i constantly think something is wrong and it NEVER is :(