Having an abortion doesn't create your emotional reaction. YOU create your emotional reaction to the abortion. If women think they will be extremely sad about the abortion because they wanted the child, then they shouldn't get an abortion. If they are comfortable with an abortion and want one, I don't see why not, as long as they do it within a certain time frame. Either way, it's the woman's choice.
Also, my mom told me she wanted to abort me but my dad talked her out of it. When I first heard that when I was 13-14, I thought of course I should be anti-abortion. But the fact is that when she wanted to abort me I wasn't me yet any more than "I" was an egg or a sperm or my mom or my dad. Anyway, my childhood sucked, and I hated my mom for years. I cried when my mom told me she had wanted to abort me because I knew she was pointing at the fact that she still didn't care about me.