Anyone's relationship change

We've been trying for 4 years... finally got pregnant, and it's twins. My husband was happy we were pregnant until we found out there's 2. We normally have a really good, strong, communicative relationship but he's been super distant the last week. The tension is so awkward. I feel like he hates me. We have talked and he is stressed about the financial burden of 2 babies. I expressed I feel so alone. I have to go to all appointments myself because of covid, so I record our ultrasounds and have the doctor summarize our visits so I can include him as much as possible because that part isn't his choice. I feel like he doesn't want to even know this info or see ultrasounds photos or videos, our sex life is gone, he barely speaks to me. Now I'm sick with bronchitis and he doesn't even check on me or offer any help with the kids, errands, or house. I feel like he's going to leave, and I feel guilty now for getting pregnant. Any advice? I'm really scared.