Advice needed

Hi, this is a long one so I apologise in advance. I live on a small holding with my family in the property's on the land. My brother and sister in law announced they were pregnant with their first baby which we were so happy about, however 3 weeks later I found out I'm also pregnant with my 3rd baby (after trying for 3 months, the fastest I've fallen pregnant so I wasn't expecting it so soon) although I was so happy I felt really bad that I was taking her limelight.

Fast forward to around 9 weeks, she lost the baby. It is so sad and my heart breaks for her. Its been 10 weeks now and she's still off work, nobody is allowed to ask how she is or talk about babies in her company (if its a conversation about other people around anyone who doesn't know the situation, she takes it bad etc). As awful as I feel, I don't want to talk about myself but it's coming to a point where I'm even shutting down my 5 year old when he talks about the baby in fear of upsetting her. I know I'm extremely lucky to he carrying my 3rd baby, but the whole situation has had a huge effect on me and the way I'm feeling about my own journey. Me being pregnant is totally ignored which is fine, but its like nobody's allowed to talk about it, I'm so worried about when I have the baby and how it'll be. I can't hide away as we are a really close family and live on the same small patch. Does anybody have any advice on how to handle the situation, being sensitive to her feelings but also looking after myself, I can't creep around much longer and keep my children from talking about it to save anyone else's feelings. Thanks in advance and so sorry if I sound insensitive, I just don't know how to navigate this.