Anxiety

I have a 14 hour road trip coming up next month that I have been nausetingly nervous about an entire month out. I'm even trying to seek out a counselor for a bit beforehand because near daily I get sick to my stomach thinking about it. I have bad driving anxiety and I know thats the core of it, but I'm also nervouse since I dont know the people I'm going with super super well, which adds to the driving anxiety component as well as just general anxiety. I'm also super nervous about being tired/feeling sick during the trip and terrified of being away from home/my partner for the week, and dreading the exhaustion upon returning and attempting to finish the work week. my work is also offering to send me to a conference a few days after I get back but the fear of exhaustion + another two hour drive so soon just adds even more anxiety. any advice??