my understanding is that they do,allow 6-8 weeks,on average before they start radiation , in order for any wounds to heal properly . You’re having yours in a ok timeframe I believe . I had my lumpectomy and sentinel ‘lymph node excisions on 4th jan and am now waiting for,radiation referral,and first appointment to plan and discuss .I’d originally been told,4,weeks but breast care nurse amended that when I enquired again at surgery