Aubrey hunny, do whatever you feel comfortable with.
When I got pg last year, as soon as I got my BFP I went in to RE's office and they drew bw for betas, then again two days later to confirm they were rising. Then because RE was following me, I got my first u/s at 6 weeks... then again 10 days later.... The rest is, well, not necessary info, but I just wanted to throw this out there because I felt so much better getting betas drawn early on.
Just my opinion though hun, and I'd love to think your mind would be rested on your trip!
Either way, I'm so tickled for you and hope you have a blast on your trip!!