Solo mum-to-be scared and unsure

Hi everyone, I don't really know how I got to this website, but maybe I can find some kind words and advice from people who have been there.

I know having a baby is the most wonderful thing that could ever happen to anyone but what if it was unplanned? I am single, 24, no job.
In theory, I am very lucky, I know that, I just don't feel it. My parents are very supportive, got me to move back home to give me all the support I need, but this was never what I had planned.
I just finished my Bachelor, was supposed to move overseas next year to do my Masters. Now I am 13 weeks pregnant, no going overseas, no Masters. Plans cancelled.
I know the father very well, at least I thought I did. I dated him for 2 years, but we also broke up when I was 21. We met again at the wedding of our best friends and everything started up again, nothing official, barely anyone new about it. Now I am pregnant with his child and he doesn't seem to want to know.
Even though I have all the support anyone could wish for, I feel alone and scared and don't know how to get over that. I want to look forward to this child, but it just was never supposed to be this way.