Effects from radiotherapy?

Hi. I finished a 2 week course of radiotherapy 2 months ago. I had 1 week of whole breast and the second week was just to the tumour bed. 

In the last week, I have noticed that the skin on my breast is mottled/slight rash. My breast is also noticeable larger.

Is this down to the radiotherapy even, though it finished quite a while ago? I  am a bit worried, as I would have thought these symptoms would have appeared a bit quicker if they were down to treatment. Not 2 months later. 

Hi , probably worth getting the advice of your breast care nurse ? I had side effects for a few weeks after finishing but didn’t notice anything unusual after that I think my breast was swollen for a while though . Are these changes definitely new or could they have been there since radiotherapy and you’ve just become aware ?