mrshen1 thank you for posting. I am also pregnant, a Christian and an anxiety sufferer, and although I can't give any answers, I just wanted you to know that you're not the only one!
For me, I think pregnancy has only slightly increased my anxiety, and over specific things. Like in the first few weeks, when I was being very sick I was paranoid about losing weight etc (I am very petite anyway and have struggled all my life to gain weight). The only thing that helped me over that was keeping a food diary so I could monitor that I was in fact eating enough.
I got quite nervous before our scans (we had an early one at 8 weeks as I have a heart condition), but both times things were all fine. Likewise, I expect to get anxious in the run-up to 20 weeks at mid-June.
I'm not thinking ahead to evacuation - I'll cross those bridges when they're nearer. But I did just read the post-birth bit of my book and scared myself stupid about how crap it will all be.
For me, things that help are not thinking too far ahead (this came out of my CBT therapy), and making lists of specific questions to ask the professionals when I see them. Also, prayer is a big comfort. Sometimes I think I pray more when I'm more anxious, and that makes me sad, because I have SO many things to be thankful for.
One of my lurking worries is PND. But I think I'm experienced enough (and my DH too) at recognising my 'sliding' signs, and if I need help, I'll make sure I ask for it.
Thinking of you.x.