This soon after surgery, it is always a good idea to check in with your surgeon before a long trip, especially out of the country and away from normal access to health care. This could be an actual visit with your surgeon, or even simply a quick phone call for your surgeon to hear about your progress, make sure there is nothing concerning, and answer your questions. You should never feel like you are bothering your surgeon when you have questions or concerns; this is true any time, but especially this early and before a trip.As far as puckering and whether time will help -- for body procedures like an arm lift, I generally tell my patients to give it at least 3 to 6 months before evaluating results and thinking about revisions. Even then, scars may continue to mature as long as a year or more. Often, time does help as your body heals. But even in situations where time does not or will not help, it is generally a good idea to wait 3 to 6 months before considering any revisions.Specifically regarding puckering -- it is difficult to tell without a photo what kind of puckering you are referring to. However, there are certainly some forms of puckering that is "normal" at 3 weeks and that should resolve. And puckering that is not normal and doesn't resolve is often relatively easy to revise at a later time.