Who else feels like they've lost a lot of friends?

I'm 33 weeks pregnant with my first at 16. At first my close friends accepted it and supported me and were so happy for me. Now the only ones who seem to be around are the ones that have grown close to me because I'm pregnant. My best friend was going to be the god mother figure and now I'm not too sure that I really even want to be friends anymore as she still expects me to be able to do everything like a normal teenager. Which I'm not, I'm going to be a mother and I already have many responsibilities to my baby and me, but a lot of my used-to-be close friends just didn't seem to understand this. 😕 feeling so alone at the end of this pregnancy! I expected it but never really thought about how it would feel!