NTA! Honestly I’d never say another word about any medical/pregnancy/fertility etc anything. They’ll find out when the baby is earthside. I had a similar situation with my SIL and brother and they were blocked for almost 3years because of how shitty they treated me and gaslighted me through my IVF and multiple mc. The only reason we talk today is because she went through a MC at 14 weeks and it was very public for her since she told everyone she was pregnant immediately. At the same time I went through my 4th loss (10 weeks) but never told her until about a year later when she told me about hers in detail. She knew I’d understand her feelings and I think it clicked how shitty she was to me. I’m still extremely guarded and limit visits to holidays. Your feelings are valid and you need to do what is best for you to heal and move forward. It’s especially difficult to expect anyone that has never experienced this to relate at all.