I would explain the situation to the RO whom you have not met, and see if he will see you before the 8th. He is after all, a member of your team. He should be involved more than in name if he (and this at a cancer center) is truly a multidisciplinary team concerned with your well being. IF this is something recurring, he is likely going to be the person working with you as well, so getting him involved is appropriate on many levels. It is your life, not the doctor who is on vacation and has NO other doctor covering his cases while he is out. That is unthinkable in itself. Time to start fighting for YOU, something that no one is more vested in than you, and is only appropriate. While things do not get horribly worse over the course of a week, when it comes to cancers, time is never your friend.