School, pregnancy, and engaged!

So, I am a senior in high school, I am ttc, and I am engaged. My SO and I have talked quite a bit the past year about me dropping out. I would like nothing more. On one hand I know I need my education, but on the other it's not something that is personally important to me. I fall asleep in class, I don't do my homework, I miss a lot of days anyways.  He tells me he will support me and our future children because he feels that it is his job to do so. I know that I only have a few months left but I can't seem to get out of this funk. He lives 7.5 hours away and I see him once a month. I just spent a week with him and cried so bad when I had to leave. What are your opinions on what I should do?