So when did you learn sex leads to pregnancy? After having sex?
Its not about how sex leads to pregnancy, its about how to have safe sex properly. I knew guys in high school that thought that a condom means there's no way a baby can happen. Hell, I've known
girls who thought that they could
avoid getting knocked up by having sex
on their period
I even knew a guy who thought girls didn't have buttholes and pooped through their vagina. That doesn't have anything to do with pregnancy but it has everything to do with the fact that the average teenager that gets pregnant or gets someone else pregnant is the last person you want raising a child.
Of course none of this is particularly relevant to my actual opinion which is that you should be able to get an abortion regardless of your "reason". Your reason is "I don't want to have a baby". Nobody should have to have a baby if they don't want to, and no baby should have to be born to a mother who doesn't want it.