Having conscious thoughts doesn't matter. You said it yourself, you have no conscious thoughts until months after you are actually born. We both know you wouldn't say that killing a 2 month old baby is OK because the baby has an undeveloped mind. By that logic I don't think saying that abortions are OK because the fetus doesn't have conscious thoughts is an acceptable justification for abortion.
There's just something about killing a cell that doesn't bother me. It's hard to explain, but aborting a two week old fetus which has barely developed at all isn't the same as killing a newborn child.
It's not always a selfish decision. If a child is going to be born into a low income family living in a rough neighborhood filled with gang violence and things of that sort than abortion should be an option. Adoption isn't always a great way to raise a kid. Kids get shuffled through households all the time. It isn't fair to the child.
There should always be a choice. No matter what the subject, there should be options. That's all.