Becoming a teacher?

Hi everyone. I am currently a junior in college (in the US) studying social policy, with minors in history and public relations. I've been thinking about my future a lot recently (graduation :/) and realized that when people ask what I want to do after college, my answer is something really noncommittal and vague, followed by "in another life I think I'd be a teacher," without a lot of justification as to why that life isn't this one. There's not time for me to add an education degree without taking out more loans and spending at least 2 more years here, which I would prefer to avoid. That being said, I have two questions.

  1. When did you realize you wanted to be a teacher and how did you know?

  2. For those who took a more roundabout path (like the ELS-APE from Illinois), what was that process like and how did you adapt?

I'd also appreciate any vague life advice in regards to this. Thank you!