Feeling Guilty

I'm not completely sure how to explain this. I'm almost 20 weeks pregnant. If you didn't know me, you wouldn't know I'm pregnant, due to not showing much at all. I love being pregnant...until it's time for bed. The feeling of my baby when I lie down almost grosses me out. Not just when my baby moves. I wish I could explain it better, but I feel so guilty for having these feelings. I'm aware that I will continue to get more and more uncomfortable. And that terrifies me. Has this happened to anyone else?