I think you might have answered your own question, you seem very committed to this baby already.
I'm a man so will probably be told to shut up, but my wife that was, was pregnant at your age ( nothing to do with me, that was before we met) and she kept her baby, did her degree and became quite successful in her field, so your life needn't necessarily come to a dead full stop, people do achieve and succeed in your position, but as Goodsoulette etc said, it's a very hard path and not one to be undertaken lightly, so keep an open mind for a little while and then make your choice. I must say that my wife would not have managed without some wonderful friends and family, so that's something to bear in mind too, the level of support that you'll need, but if you really want this baby then I think you'll find a way. Equally, you may decide that the right choice is a termination, in either event I really do wish you well, just make sure you are not pressured by other people one way or the other.This must be your choice, what you really feel in your heart.
Big hello to Kerry-ann whilst I am here, glad you're going on alright :)