I don’t have experience with this type of situation, but from one pregnant mum with a toddler to another I just wanted to send you a virtual hug and tell you how freaking proud I am that you left. That must have been so hard to do.
Just keep making choices in the best interest of you and your babies. He’s declined your help and it’s up to him now. I hope he comes clean, but if he doesn’t, just know that you are strong and capable and you can do this.