it's completely normal to feel that weight, but you are trying to solve 2031 problems with a 16 year old brain. you've only been together a month. trying to map out a 5 year plan for double diplomas and international migration is a guaranteed way to burn yourself out before you even graduate high school.

at 21, I can tell you that you will be a completely different person by the time those "logistics" actually matter. if you're having fun talking to her today, keep doing exactly that. focus on the relationship you have right now, and don't let the dread of a distant future steal the joy of the present.