When we were in our 20s, I waited years for dh to propose. I didn't worry too much about having to wait for kids, too, b/c I knew American guys were bad about committing, and I knew that most either outgrew it or life just went on. I assumed it would be the same for us. I was wrong. I wish I could have known then, but I can't change the past.
Well, you just have to take stock of where you are now and where you want to be, and how you can get there. But don't let the critics have a say. Only listen to the voices that encourage you.