This is something that didn't bother me until recently. All my life, before I knew about myself, the last thing I wanted was children. After an extended period of intense loneliness, I got a cat. I had never had a cat before – my family had always had dogs – but I chose a cat because she would be relatively low maintenance. Children? OMG, no.
This attitude stayed the same after my egg cracked and for a year after I had gone full-time. Then I noticed that something had changed. I was watching mothers in the mall with their small children, and feeling wistful, even jealous. After a few days of this, I was suddenly struck with the painful realization that I wanted to bear children of my own, and I couldn't. Never in my dreams did I expect my attitude to change like that. The woman I am was buried very, very deeply.
This bothered me a lot for a week or two. Fortunately, my job and other responsibilities keep my mind busy and occupied. I try not to think about it.
This isn't a trans problem, specifically. There are many cis women who are unable to bear children. It's not easy for them, either. So, I wouldn't blame this on being trans, or think it makes you any less of a woman. Being able to have kids isn't a given for any woman, until she does. It's a privilege, a gift, not an automatic thing for anyone.