I Have A Question On Mental Health... My Boyfriend Whom

I have a question on mental health... My boyfriend whom is 17 years old is acting different from the way he was six months ago. He is confused on his emotions, constantly sick as in nausea, headaches, etc. He misses school a lot more and just isn't up to do anything anymore. He is foreign as he came from Mexico and is Spanish. His English is not perfect and he can not have a well put conversation with someone in English. He gets teased a lot because of it and made fun of for being foreign. He doesn't like leaving the house and when we do he makes me talk to people for him. Could this be depression and anxiety?