It took 3 months for my lumpectomy scar to heal properly and was weeping until then. However, they said it was OK to go ahead with 17 sessions of radiotherapy. Just for my own peace of mind, I put a small plaster over the area. Radiologists said it wouldn't minimise the effects of the radiotherapy. Hope all goes well for you.
I had an infection and now a haematoma. The nurses told me my wound had to be fully healed before my rads can start as the wound can 'break down' if not healed properly. It must be so frustrating if you're all prepared and ready to go.
let me know what they say about yours as this is driving me up the wall.