Hi @Eiremogra - I have a 3-year-old DD from a donor egg, and I'm pregnant with our second DD who is DD's genetic sibling.
I felt how you did. I also felt guilty for not feeling happy and excited that we had a donor - instead I felt like a bit of a failure, quite a lot of self-hatred towards my body, and in addition to that, some worry that (due to lack of genetic connection) I wouldn't love her enough, have the right maternal instincts etc.
All the way through my pregnancy I felt disconnected and not really any of the joy and love I thought I would towards my bump.
HOWEVER . . . I adore DD. She doesn't look like me at all, initially she looked exactly like her Dad and while there's still a resemblance, I can see that she must take after her genetic mother in terms of appearance. But, it doesn't matter. She's my beautiful DD that I love with all my heart and soul.
It also helped me to remember that I grew this little girl - my body sustained her, my blood flowed through her veins, and according to epigenetics research, some of her genetic material has stayed with me and vice versa. We are very much part of each other and I'm proud of my body for that.
I think donor egg conception is really, really complicated from an emotional perspective. Have you joined the Donor Conception Network? Might help to share experiences with others who have experienced this. And remember it's only natural to have worries and concerns - talk them through with your counsellor, they'll have heard it all before!