IUD Removed Yesterday, But Now...

Hi all! New to Glow as of a few weeks ago!  My fiancé has always had a lot of fears surrounding having children, we've played the back and forth game a few times over our relationship as to whether or not he wanted kids.  He's been on board for the past 4years and we've just been waiting for the right time.  About 3 weeks ago he initiated a conversation telling me to take out the IUD at any time, that he felt it was the right time etc... Even showed me ideas for the nursery and all! I've been elated!! I started taking my prenatals and booked the appointment for the IUD removal.
It was removed yesterday but now he's feeling very nervous about it and having bad dreams about my giving birth/something being wrong with the baby... I'm trying to be encouraging and calming to his very natural fears but it's difficult because he's soooo not soothed by my words...
Any suggestions about what to say to him to help him through his feelings? Anyone else had a similar experience? Thanks for listening!