i just wrote this post to another person, but it might help you too.
i had a freind who found out she was 6 months pregnant while going through chemotherapy. she never knew she was pregnant because before they found the cancer she had miscarried (turned out she had twins and only one died) and the chemotherapy masked her symptoms. anyhow, she was told her baby would have heaps of problems because of the cancer treatments but she was too far along to get an abortion. later she went to have the baby and came home empty handed, she said the baby had died. it was so sad to see all that she had gone through, but people just accepted it and let it go. a few days later she came back with a beautiful baby girl to our amazement. she told us that she had planned on giving the baby to a home for the disabled because of all of the expected problems and that she had been councelled to tell everyone that the baby had died so that people wouldnt treat her poorly for her decision to give the baby up. she followed through with the plan but after only a few days changed her mind because she missed the baby so much.
point of this storey is that you can follow through with the pregnancy and should you not want it by the end you can descretely give your baby to a loving home and tell everyone that it passed away. no one will harrass you, tell you that you were a bad mother, or rub it in your face like what might happen if you tell everyone that you gave your baby up for adoption. its something to think about, but i hope that you dont abort. a child should never have to pay for its parents sins, especially with its life.
best of luck