i have lost 2 children as well so i know what you are feeling. my first pregnancy i was only about 2 months along when i lost it, which was devistating for me even though it was an unplanned pregnancy. my second child was planned. i made it to term and he was perfect... for a while. he contracted meningitis and we watched him waste away for 8 days until he finally succumbed to his illness and died in my arms. words cannot explain that kindof pain. with both babies i felt as though my heart was ripped into a thousand pieces and everyday my soul bled for them. i tried for months afterwards to get pregnant and finally did, now my son, my third baby is 7 months old. but in all of this joy, i realize that he is not my first 2 children reincarnated. having more will not bring them back. im sure that you feel a piece of your very being is missing and there is a NEED to nuture. you are a mother by rights and part of being a mother is nuturing. i was so bitter that i was planning a funeral rather then sending out birth announcements and to make it worse, it seemed like everyone around me was getting pregnant. its unnatural to lose a child and being 5 1/2 months pregnant that is pretty signifficant.
now, i know you think your mature, but if you were really ready than you would realize it should never be "all about me" it should be 'all about the baby' and what is best for him/her. to truly love someone/something means to put its needs before your own. what is best for your child is a stable home and a healthy mother who is ttc for the right reasons. get your education and set yourself up for success. when you succeed your child will too.
if you are pregnant now, dont do anything you will regret. an abortion wont hurt any less than a misscarriage but it will haunt you for the rest of your life. consider adoption and bless a family with the gift of life and love, otherwise try it yourself. i know plenty of people who have found finacial success later on in life. and remember, success is personal. if you are living your dreams, whether it be to be a power couple with 5 cars and a mansion or being a stay at home mom, then you are successful. but remember to think of the child first.
good luck