Help me control my temper!

I'm at the end of my first trimester, and I've definitely been way moodier than I've ever been. anyone have advice for controlling my temper? I'm constantly angry at my husband, and I'm afraid he's going to leave me. it's hard not to be mad at him when he doesn't listen to me though. I just want to learn how to be calm when I get angry and talk to my husband about what's bothering me.