OK, dilators, I seem to recall reading or hearing that you must do this for the rest of your life due to scar tissue and vaginal shrinkage. I wish I could remember the exact words, but I cant. Chemo makes you have what they call chemo brain while in therapy. Im doing better now as far as memory goes. Anyway, here is an article about it. It's PDF so you will need Adobe Reader. If you still have questions, I am sure you can consult with the doctor or the nurse.
http://www2.mskcc.org/patient_education/_assets/downloads-english/571.pdf