@Loveglen welcome and good on you for posting your experience, although I’m so sorry to hear about the scar catching your nipple - it sounds like an unwelcome ordeal 🌸 very big virtual hugs to you.
I didn’t have that experience but after surgery (12 m ago) I developed some scarring; it is helped by laser and stretching exercises with the breast specialist physio. Might be something for you to consider once you have put radiation behind you.
Radiation therapy (15 sessions) went smoothly for me - towards the end I was tired and my skin did redden and I got a bit of an itchy rash but it only took about a week or so to resolve, nothing serious. But as we come to know, people’s experiences can vary, so there’s every likelihood you may have no problems at all 🌻
I am now on hormone therapy (an oestrogen suppressing drug, aka aromatase inhibitor) called Letrozole) and this treatment is a new phase and also affects people differently. On the BCNA network there’s so many informative discussions about it, and there’s also BCNA website podcasts and videos about treatment for oestrogen positive breast cancer. Sometimes hormone therapy is referred to as endocrine therapy.