I'm going to yell at my boyfriend
Why would you yell at him?
It's just that he's pissing me off with the way he's talking to me
It's normal to get angry, it will be hypocritical for me if I say that I don't get angry and yell at people sometimes. But your boyfriend is someone special in your life, and you do not want to always get angry with him specially if this person makes your life better. Why don't you talk sincerely with him, and mention that he needs to change the way he talks to you?
I want to but it's hard not to just yell.
I know you're really mad about this, but talking to him in a calm manner would be much more effective in this situation.