I am so glad you posted this because I am feeling the exact same way right now. I actually just got off the phone with my best friend, who found out last night that she is pg. So I headed straight to the boards for some support.
This particular friend has a gorgeous 17 month old son and has never experienced a loss, but she was totally there for me when I had my molar. I am super happy for her, but there is a huge part of me that is feeling like I can't talk to her anymore about how I'm feeling about my loss, because I don't want to spoil her happiness or freak her out. Plus I never want her to think she can't talk to me about how blissful her pregnancy is!
Its such a weird feeling, and you are definately not alone. Don't think that you're a bad person though, its totally natural to feel like this after a loss around your pregnant friends.
Definately post here when you need to talk!!! We're always here to listen!