Quoting Scared & Excited:" I've made the heart breaking decision. I'm going to terminate my pregnancy. Even though I want this little ... [snip!] ... I know this is what's best for her and for me. I'm falling apart. I feel numb and almost alone. Has anyone ever felt similar?"
If you really don't want to terminate the pregnancy, but feel you have no choice. What about open adoption? It would give you the opportunity to give the child to a family who could provide those things that you want so badly for her and allow you an opportunity to stay in her life! Would that be something you'd be willing to consider? It's just a thought...it sounds like you're really struggling. I wish you all the best, you're in my prayers.
A thread I often refer to is: http://forum.baby-gaga.com/about548230.html
For information on the procedure and emotional struggle that may follow your procedure. It's worth looking into before you go on Wednesday.