Yeah I know the feeling. I am 36 weeks pregnant and I have no friends left basically...But lucky for me that particular friendly is a really great friend and she has stuck with me through my pregnancy. She bugs me for being "stupid" haha but she doesn't really care. She is pretty excited herself, and she comes over all the time and her boyfriend brings me pizza haha when he comes and picks her up. I just try and be as good of a friend back as she is to me, after all what are friends for?
I've basically learned that the peoplei thought were my friends are not. I hope you can find some true ones that help you through this pregnancy. If not there are always these boards lol not quite the same as having some one in flesh and blood but pretty darn good :) i'm almost always online so if you'd like to talk.
by the way i'm 18 but I was 17 when I found out I was pregnant.