No problem. I will be starting a December 2018 thread under the radiotherapy section shortly which you might find useful to pop into leading up to and during your rads where you can get and give support with the other ladies undergoing and about to start it.
Sending you hugs
Just to add if you let them know the dates I am sure they will work around you if they are planning to start it earlier than that x
Normally at your planning apt you are given a start date around two weeks later so you should be OK x