I can only speak for myself on this. I had to stop the Forteo while I was in the hospital for over 2 weeks for my last 2 spine surgeries. I resumed when I got home with no apparent loss of effect. The Forteo, in fact, greatly aided the healing/fusion process yielding much better results than either the surgeon or I expected.
Good luck to you!
I don't think missing a few days will hurt your progress. I do take my pen with me whenever possible. I reuse the ice packs and cooler sent to me by the pharmacy and pack it like pharmacy sent it to me. I also bought a thermometer to make sure the temperature of hotel refrigerators won't freeze the pen.