The puffiness might be clogged lymph nodes, they aren't draining normally.
Check out some videos on you tube , or ask PT about it , if they know how to drain lymph nodes.
https://www.google.com/search?q=drai...+nodes&tbm=vid
Here's a good one for neck/chest Lymph Drainage (the image is distorted @ some points)
https://www.youtube.com/watch?v=U7fVE7x35xU