How would y’all handle this?... (update)

My bf, bf’s dad, and my brother all work together. My bf was told by his dad that my brother was going around telling people they work with that I am pregnant and this is how he reacted... the pic he sent me is what he sent my brother. I’m so stressed because how my bf reacted was uncalled for because there are different ways it could’ve been handled. I’m 18 weeks and have just started telling other relatives. I don’t think my brother had the right to tell people without consulting with me first, but I also think how my bf reacted was uncalled for. I really don’t want want my family and bf to have problems with each other. I guess I’m just stuck and idk how to respond to my bf’s reaction. What would y’all do?

UPDATE:

The rest of my bf’s and brothers messages...

I did talk to my brother and he did accidentally let it slip to someone at work because they were talking about kids and he just brought up that he was gonna be an uncle. I don’t see where my brother did anything wrong and I don’t like how my bf handled it. He disrespected family and didn’t care whether my family liked him or not. This isn’t how I pictured my life to be. I wanted to be with a man who respects my family and doesn’t cuss in every sentence. My bf has anger issues and he calls me every name in the book when he’s mad at me. When I tell him how I feel about it he tells me to ignore it or get used to it cause he’s not gonna stop. I don’t deserve this. Then last night he went to the casino and blew $1000 for the second time in the past 6 months. We are in no position to be blowing money like that especially with a baby on the way. Even with that money we wouldn’t of been where we need to be. He told me before he went that he spend 50 max. So he also lied to me and then tried to blame me because we were fighting so he wasn’t thinking right and then he thought it was funny? I’m so stressed because I wanna be able to provide for this baby without any worries and he has shown me many times that I can’t rely or trust him. I think I may leave him and move in with my mom, but I’d need some motivation and encouragement. Thank you.