Teenage pregnancy is not a "sin" as all the religious wackos would have you believe. It is an unfortunate occurrence that, in a non-religious world, would be an easy problem to take care of.
I am assuming that most teenage pregnancies are accidents, that a child is not really wanted. The result of some pleasure should not be an 18 year sentence of servitude, resulting in a resented child who, more often than not, will grow up screwed up mentally, if not an outright loser.
If you are a pregnant teenager, tell the religious wackos to go eff themselves and get an abortion.
If you have no means to support a kid, and you don't REALLY want one, but you decide to "keep it" because of religious/societal pressure or your own stupid religion, then I judge you just as stupid as those around you.
Get an abortion. Religion is EVIL.