Has anyone heard anything about daily swimming while undergoing treatments?

I want to keep up my routine of swimming for as long as possible and didn't know if there was a problem doing it while getting radiation/chemo.

I'll ask the Doc's, but thought someone here might know too.

It has really helped with the neck stiffness and mobility, although not completely resolved.

I still have swelling on the Left side, and it feels like it's getting hard..? Is that normal?

I think I remember reading about that before, but when it starts to happen to you, it seems more severe