I'm so sorry for all you have been through. You have a wonderful blessing waiting for you in 2019, becoming a mom!! Being a mom is the very best part of my life. I love my kids unconditionally, and would do anything for them. I know you will be that way as a mom as well.
As for family, I very much believe there is the family you're born into and the friends who become family. Sometimes the friends become more family than blood relatives.
I hope you are able to enjoy the holidays a little. Sending lots of love your way.