I was diagnosed with grade 3 invasive ductal carcinoma in July last year. I had a lumpectomy, followed by chemotherapy and radiotherapy. I will have my last dose of radiotherapy on Tuesday. The nurse gave me ointment to help keep my skin moisturised. I've been using it morning and night but last night I noticed something that feels like the lump. Don't know if I'm being paranoid. Could the cancer be back?