....why me?

So every since i could remember, I’ve always wanted to start having children and a family of my own at a young age.. Hearing my friends and classmates had gotten pregnant while we were in high school was a big slap in the face for me. I wanted it to be me. I wanted to be pregnant. I’m in college now, but i still feel exactly the same regardless of where i am or who it is. A few of my guy friends and even a very recent ex has a child on the way now. Why wasn’t it me? Why wasn’t i the one to get pregnant? Why didn’t I become pregnant with my ex’s child? I know I’ll be a great mother but i just want to know why does it keep skipping me when I want it the most?!