It does get better! I had butterflies in my stomach and, much worse, odd twinges and sensations (remaining breast, shoulder) every year, in spite of clearly understanding that this was scanxiety. After five years, it more or less stopped. No, I don’t think five is a magic number, I think I finally just got tired of the pointless worry! It’s completely normal but of course not productive. Like you, I get my results straight away and that helps a lot. Accept it for what it is, a natural side effect of knowing that bad stuff can happen, and don’t make it any more difficult by delaying - think how good it will be to fly out on that wonderful trip!
Best wishes for a happy outcome and happy travelling.