Denial of baby bump?

Struggling with the idea that I'm beginning to show. That may sound absurd! I had worked very hard in the last year maintaining a good healthy weight and a body that I am happy with. This is my third child, but it's my second (and final) marriage, so the age gap between my kids will be VERY large. I'm just struggling with the idea of "looking fat" and being pregnant. Any thoughts? Any advice? It's the one thing I just can't let go of. Embracing my new body!!