Welcome @MissyMac Do mention it to your doctor. Always good to make sure that they are aware of everything. I developed cording after surgery so I have been having laser, etc treatment at a specialist physio since then. I finished rads in September, but the physio now thinks I'm showing signs of fibrosis as well so is working on that. If you tell us your general location, someone may be able to advise of a good oncology physio near you.
I'm glad that you have found this forum and that it has helped you get through this.