I was adopted at birth and I am also an adoptive mother of a 6 year old young man from birth. We are also a foster to adopt home looking at giving back to our community because we felt so fortunate at having a great newborn experience.
It is a process you will have to want to put your heart into! Good, bad, right or wrong things happen for a reason and you are only given what you can handle. I am speaking from my own experience but I never thought I would ever be a mother and it has happened for us. After years of infertility treatments we were joking about one day and someone over heard us and followed my hubby into his office to say his wife was expecting. 7 months later we were their for his birth and she put him into our carseat. I had sooo many worries that it might fall apart or something bad again might happen to my chances of being a mother. We pulled over a few blocks from the hospital and pinched our selves to make sure it was real! The one thing that I always keep in my mind was if she was the birth mother she will be the mother until she gives up her rights for someones else to raise the child.
Even with the couple of foster children I have had the pleasures to help take care of. Their parents are still trying to do the best they know how. Even if they are right or wrong some just don't know how to from thier own problems either mental or being brought up in their own family.
If you have enough love to open your heart for this don't give up. If your family has the will then their will be a way.
Finding the right situation for you will come. Work to find a social worker either an adoption agency or children services or even a support group will help you find the answers. Your gyn can help be a good guide also. Our social workers both times helped as well and so many other people helped us get the right answers for us.
Good luck and don't give up on your dreams.