Should we tell her ppl (kind of long)

I had a miscarriage back in August and the only people me and my SO told were my sister and his sister in law. Now my SO wants to start trying for baby number two, because our MC baby was not planned, but I don't think I'm emotionally ready and he said it's because we haven't told/ talked about it enough and I'm not sure I want to tell the family about the MC, just because his sister is pregnant and it hurst me to even hear her talk about her baby. I know it's not her fault. And I'm being super supportive but some days are worse than others emotionally. And no one even bothers to ask me how I'm doing or my son really so I don't know if I should bother to tell them about it because I honestly feel like they'd be like "ok?" And go on talking about his sisters pregnancy. 😞 I always get ignored or interrupted, or they make what I say about them so I usually keep to myself...