Where do they all come from?

I'm talking about pregnant women... I am surrounded by them and I can't get away! Just today, I got an invitation in the mail from a pregnant distant cousin to her pregnant sister-in-law's baby shower. Tomorrow at work I'm attending a surprise baby shower for one of two co-workers whose wives are pregnant. I work with two women who, since I joined the team in November, have gotten pregnant. And one of my closest cousins is also pregnant. She did not want to tell me herself, because I guess she just found out she was pregnant after my miscarriage, and so had to tell my mom who then had to wait for a "good time" to tell me. I can think of so many other pregnant women I have had contact with in just the past month, but you probably get the point. Sometimes it doesn't bother me to be around pregnant people, but other times, I just wish I had a good excuse to stay away. I am terrified that I will hear that someone else I know who wasn't even trying or just started TTC is pregnant. I hate that feeling of knowing you should just be happy, but being unable to be totally happy. Because even though you are glad for the pregnant person, you can't help but to feel depressed and to think about yourself and why it's not happening to you. Then you feel guilty for feeling that way, and you feel like a terrible, selfish person. Lord, please don't let me feel that way tomorrow...