Breast lymphedema before/during radiation

Has anyone dealt with breast lymphedema that is NOT in your arm? Did you have it before or during radiation treatments? 

I have a small area of redness that started before radiation and seems to be growing as treatment progresses. My breast is heavy and slightly swollen. Hard to tell if this is just the effects of radiation or something more. This poor boob is really taking a beating!  I’m calling the lymphedema RN today but curious if anyone else experienced this and has any insight. 

Thank you!