Got my girlfriend pregnant

I'm 18, she's 20, we've only been dating for like 3 months. We're getting it taken care of, everything seems to be on track so it's not like this will be lifechanging. I've got the money for it, I'm trying to involve myself as much as I can in the process to support. But it's like, damn, I never thought of myself as the kind of kid this shit happens to. I don't know anyone else who's gone through the same thing. I feel like my priorities are reset, zooming out on my life like 'damn I actually do have the capacity to have children, and a career to ruin, etc etc'. I'm scared it's gonna strain our relationship, and I'm scared to watch her go through the actual process (we're using the pill). Can't talk with any family or friends about this, except for my little brother lol, so this is just going out to internet strangers. Any advice? Anyone gone through something similar?

Edit: I should clarify, we are terminating.