Breast shrinkage after Radiotherapy

Hi All, 

This is my first post on the forum, although I have been looking at other posts since my diagnosis of breast cancer in March and have found the support and information given to members invaluable. I am 44 and had a WLE of left breast and SLNB in April. I recovered well and the tumour removed was 26mm with clear margins gained. Strongly positive for ER AND PR and I am now taking Anastrazole which my Oncologist wants me to continue with for the next 10 years. 

I had 9 sessions of Radiotherapy, 5 to the whole breast and 4 booster sessions. All side effects were explained and I knew my breast shrinking was a possibility. I finished my sessions on 27th July and noticed yesterday that my breast size has reduced quite markedly. I didn't realise this would happen so quickly, I estimate I have lost about a size and a half cup-wise so far, when the lumpectomy is taken into account. My right breast is a DD and I would say my left breast is now a C cup. My Breast Surgeon said at my follow-up appointment after my operation that they would recontruct my breast 2 years after radiotherapy if needed and pop in a small implant. I do not think a small implant will be feasible as I have lost size and volume to my whole breast now and not just the lumpectomy area. I don't think they will be able to do anything for me. 

I have been feeling so upset about my breast changes since yesterday and it feels quite an irrational response that I am having as I was fully prepared to have a mastectomy if required before. I do not regret having Radiotherapy and hope my post does not put anyone off having this form of treatment. I am just wondering if anyone has had the same experience as me and if so how they managed? I will be seeing the Oncologist for review in around 6 weeks. Im worried my breast is going to shrink further and about how noticeable it seems to be now. I'm wondering if I need to speak to anyone about having a prothesis? I'm so thankful to be alive and to be well and moaning about my breast shape change seems a little silly so I hope my post does not come across as insensitve. I lost my Father two years ago to cancer and am just so grateful for all the wonderful treatment and care I have received. 

Many thanks for reading.