Hi Jenna,
Welcome to the forum hun!
I believe to a certain extent it doesn't matter how old you are 18 or 40, having a baby changes your life in ways you could never think possible and it teaches you responsibility along the way, NONE of us knew everything when having our first babies, and for those of you TTC your first, there is nothing that can prepare you 100% for the change a baby brings.........you can imagine, but doing it for "real" is very different, and we ALL have to learn along the way, and there isn't a time this learning stops, as there are so many things learned and faced as they get older..........making us all wiser for next time (I hope LOL).
I am sure many people will agree, that you don't have to be a teenager to be immature, nevermind want any responsibillities, I know many a 30 plus yr old that need to grow up! So when someone like you (Jenna) comes along, it is refreshing that they have the maturity to think something so serious through before going ahead with it.....................
I wish you all the best babe in TTC and your future!
Tam x