What should I do if an Invisalign attachment falls off and I'm out of town?

I'm out of the country and I just realized that one of my attachments had fallen off. I've been out of town since Sunday, and I won't come back until Wednesday night. I know they for sure fell out during those days because I had all of them before I left. Since I probably won't be able to see my dentist until Thursday afternoon or Friday morning, will this cause a major change in my treatment?