I need advice :-(

Where to start. We moved recently. My 4 year old was helping me unpack a box with picture frames inside so we could hang them back on the wall. He came across one that had his framed ultrasound picture in it. I was about 8 weeks along at the time. He was staring at it and asked what it was. I pointed to the larger area and told him that was him when he was still in my tummy. He pointed to the smaller area and asked "who is this?". I explained to him that he had a twin brother or sister that died while still in my tummy and that that was the only picture I had of both of them together. He said "that was my brother. What is his name?".

I said well, the baby died before it came out of my tummy (it's estimated that growth stopped around 5 weeks) so the baby never got a name. He got so mad at me! He told me his brother needs to have a name like everyone else and that he won't have a name until his brother has a name. I've never seen him so mad. He said I'm a big meanie and he doesn't like me anymore.

I told him we could call the baby little bean and he accepted that but he's pouting over near the book shelves and told his sister he doesn't like me because I'm a meanie to his brother. I'm letting him cool off but this just broke my heart. Maybe it's the pregnancy hormones but I just want to cry.

Do you think I should just try to move past this or should I talk to him more? I never expected this sort of reaction from him when he eventually found out he had a twin. Tell me I'm just being over emotional and I didn't mess up by explaining this to him too early 😓😢😭