Best friend changed after she found out i was pregnant?

No, I have never gone through this myself, but I can tell you that she is not a true friend. It sounds like she has a lot of growing up to do and may even be a bit jealous of your situation. It's hard when friendships grow apart after so many years, but it seems like you would be better off without her. Don't let her stop you from enjoying this very important and exciting part of your life! Good Luck!