Do you find it hard to connect with pregnant people? It makes me feel like an outcast

I don’t know how to respond to people when they share photos of their baby bump and tell me they’re showing so much. I don’t know what an expected level of showing is… or when someone tells me they’re at risk in pregnancy… I tell them I’m sorry but I don’t know what that means. I don’t want to ask many questions because it makes me feel isolated further. Like I’m the only one who’s childless that doesn’t understand these terms, milestones for babies, how many weeks pregnant equates to how one is feeling. It’s all too much for me. I struggle to be a good friend and good boss when I simply don’t know much about this, and also it hurts to know. It just draws attention to me being single and childfree. Sorry if this is a rant. Just wondering if anyone can relate and if there’s anything you did to get through it.