Overly emotional

Had our kids Halloween costume parade a few minutes ago. I was doing fine until I saw al the babies. I teared up and had to leave. I just want one of my own. It's so hard to see others with 3 or 4 and I can't even have one.
And then I hear "wow, it seems everyone is pregnant!" because there are 3 girls my age pregnant at work....Yeah, except me....it's Surronds and suffocates me...I know I can't be upset because people don't know my silent struggle, but it always gets to me. I'm more bitter than happy anymore. And people can be so insensitive :/ 
Sorry for the rant. Just overly Emotional lately. Hope this month is it. Can't take much more of this hurt and emptiness.