@loserlikeme I'm so sorry for the news you've recently received and can't quite imagine how hard it must have been to hear. I'm also sorry that you're getting such a hard time on this thread.
I understand where you're coming from with the growing up thinking how your life would be. I often think that life is like a video game, there are loads of side quests that you can do or not do as you feel but there is one Main Quest. For every person the Main Quest can be slightly different.
For me the Main Quest has always been finding someone to love and spend the rest of my life with, I wanted children but they were an 'optional extra' as it were, one of the side quests, and were less of a priority than a strong career. For my sister growing up was ALL about becoming a mother. her Main Quest, was having a child/children, marriage was a side quest.
8 years ago we found ourselves in the slightly cruel position of each having what the other had wanted. I fell pregnant very young and in an unplanned manner and have struggled to build a career or date as a single mother, while my sister has a good career and a wonderful husband but could not conceive.
It takes time to come to terms with the fact that your life will not be how you imagined it to be, but i think the best thing to do is to try to figure out the things in your life which make you happiest and invest your effort and time into those. If raising a child is truly still essential to you then there are so many little ones in the world who need to be loved and cared for, just take some time to reflect and understand whether what was important to you was having your own child or 'just' being a parent.
I wish you all the best.