Being The "Pregnant Friend"

I am 11w1d with my first child and I am feeling down lately. None of my close girl friends are pregnant or even married. When I told them, they were all excited for me but I am slowly starting to feel more isolated as they continue to go out and do things without me. Of course, I am not "going to the club" but I still feel like they could make more of an effort. It makes me feel really alone and like I have no one to experience this pregnancy with. I wish I had someone that I could connect with during this time. I could definitely put myself out there when I am further along but right now I feel stuck. Anyone else go through this? Have advice for me?