Don't abort, could you really live with yourself knowing you killed a child? Get a job, take responsibility and marry her. This is why my wife and I waited till marriage to have sex.

My advice is to calmly tell your parents and assure them you will marry her. At your age you probably cant father a child, you aren't old enough or rich enough. If you think you can, go for it. If you dont think you can, adopt. Just don't kill the baby.