dealing with a boyfriend with extreme anger issues

currently pregnant and my boyfriend has very extreme, scary, anger problems. The smallest things set him over the top and it’s out of control. He says some of the most hurtful things to me while he’s angry, we even fight physically sometimes & then later after he’s calmed down he comes back with apologies... this is a repeating cycle. Idk what to do. I love him, and I want to help him deal with whatever makes him hate the world but idk HOW! Mentioning seeing a therapist is a huge no no. I don’t want to lose my pregnancy over this stress 😞