I’m (25m) having a hard time with a 5 day long separation between my SO (23f) and i while she’s in Illinois on a business trip. This is the first time since we’ve really started dating 2 years ago that we’ve been separated like this and I feel overwhelmed by my anxiety to the point it’s caused conflicts. I am terrified of something happening to her while she’s away and it’s nothing specific, it’s just the fear of the possibility of losing her or her being injured. Which to me sounds almost ridiculous as I type it out because most people aren’t hindered by this fear. I know separation anxiety correlates with BPD and that insecure attachment styles are associated as well, but is that driving my fear of something happening to her too?

I’m not sure how to manage my emotions towards this situation, even though logical me knows it’s something I can’t change and that I’m a functioning adult who has supported himself before this relationship, so why do I keep bouncing between anger, anxiety, and sadness over something as minuscule as a few day business trip? Do others experience this?
It feels extremely difficult to be the supportive partner I want to be and I don’t want my relationship to suffer more because of my thinking. Anything others suggest I can do to cope with the negative emotions that I’m feeling towards this trip?