Lots of questions

I feel I am heading towards radiotherapy with still lots of questions.  I have no Breast Care Nurse so can anyone help? No one has mentioned the appropriate creams to use and holding breath - no practice at planning. I am pretty small - how does that work compared with a bigger busted person. It’s horrid not having anyone to ask these queries to. 

There hasn’t been no mention of what to wear during the treatment. Asking for women radiographers than men and actually being covered up during the treatment.  I can’t imagine they have time to tell me everything at my first treatment.