Husband started Prozac

I’m 30 weeks pregnant and my husband just started Prozac a couple of weeks ago. He had really bad anxiety because our dog he’s had for 13 years isn’t doing well and everything else going on. At first it seemed to be helping but now he has so much anger and he doesn’t just let things go that make him angry. He’ll go to sleep angry and wake up angry. He’s been so supportive and good during my whole pregnancy but now he’s always mad and it’s making me super anxious and depressed. I don’t feel like I have the same support person I’ve had my whole pregnancy and I don’t know what to do. I want him to be able to get the help he needs but I also don’t want it to affect me negatively especially the rest of my pregnancy and when our baby gets here. I feel like I can’t even talk to him because he’s just angry. Any advice please?