advise please!!!

so my boyfriend hasn't talked to me in a week and it's bothering me so much. he hasn't even told me why. im debating whether or not i should show up at his work place when he's finished to talk to him, but im scared that he'll push me away and yell at me to leave him alone. or tell me that we're done. it's giving me so much anxiety but i really miss him and really want to find out what's bothering him. any advice? should i confront him?