Struggling with constant pregnancy talk

Hi all, just wanting some advice on how to cope with feeling like you're constantly surrounded by pregnancy talk and announcements.

For context, I'm 30 years old and my engagement ended middle of last year. I haven't particularly been too interested in dating, as I'm moving states to live with my mum in April, so I know there's not really much point until then. I do know that I want to have a family, and there was discussion around trying for a family last year right before my ex ended things and said he had never wanted kids with me and just said that because he knew it was what I wanted. It was a massive slap in the face, and I went from engaged and thinking I was going to get pregnant to single and not knowing if it would even happen now.

One of my best friends found out she's pregnant late last year. I'm very excited for her, but those feelings are also mixed with a deep sadness as we'd often talked about having babies at the same time. Her pregnancy comes up every day or every other day in conversation, and there have been times where she and my other best friend (who has been pregnant, but had an abortion) make comments like "oh, you wouldn't understand unless you've been pregnant" which come across as unintentionally dismissive, remind me of my situation, and make me reluctant to participate in conversation surrounding her pregnancy other than to react excitedly to updates.

I feel like all the time there's more and more people I know announcing their pregnancies and so the conversations are coming up constantly. While I'm genuinely happy for my friend and these other people, I also feel sad about my own situation and not knowing if I'll find a partner and start a family one day, but I think people expect me to be "over it". I just feel like I'm having to keep my mouth shut and nod along, because admitting I'm upset would cause people to feel uncomfortable or like I'm making things about me.

I'd love to hear from other people who have experienced these complex feelings surrounding pregnancy, I know that over time it'll get easier for me because immediately after the breakup I would cry when I found out someone was pregnant, but I still can't quite shake this feeling of sadness at not knowing if this is something I'll experience while seeing everyone around me experiencing it.