Is abortion worth it?

I'm 20 years old, in college, still living with parents, have diagnosed depression, and am pregnant. The father of my baby wants me to abort because he loves his girlfriend (long story) they've been together for over a year. He's 28. Normally I'm not for abortion, but this isn't at all how I planned my life. I'm scared to bring a child into this world without a father and a family. It just feels so wrong. I'm scared my family will judge me because of his age, my age and the fact it was a one night stand. I'm also scared I'm not ready to be a mother and if a baby will interfere with my depression battles. But a part of me feels excited to have somthing to love on and have a baby of my own. But if I abort, I'm scared of regretting it. Is abortion worth it? Does anyone deeply regret it? If you could go back would you? I just don't know what's best for me