I'm Ashamed to be Pregnant...

I've been feeling really guilty about being pregnant lately. I'm 23 and engaged to be married next month, but my fiancé and I both know we aren't ready to be parents.. We haven't told either of our families because they are hyper-conservative, but keeping it a secret makes me feel so shameful! To be completely honest, I'm not excited at all, but abortion isn't an option for me (please no debating about that, just my decision for my life). I don't know what to do, or how to feel. I'm only 5 weeks, but I'm not excited at all, and feel like a terrible person for wishing I weren't expecting...
I'm new to the <a href="https://play.google.com/store/apps/details?id=com.glow.android.nurture">Nurture</a>/Glow community, but I've read some of the posts and y'all seem to be really encouraging. Any advice? 😞