I think it's completely natural that you might be revisiting your loss right now, and people who tell you that you should move on since you have a healthy baby now really misunderstand the nature of loss and trauma. It may be that you have to revisit this multiple times throughout your life; it was a tremendous loss.

I heard Dr. Jessica Zucker on a podcast talking about the impact of a miscarriage on her life. I haven't read her writing but you may find it helpful (there are links to her articles on the squares in the main page).