Swelling around expander perimeter?

Hi all,

I’m a week and a half out from my BMX with over the muscle expander placement, and in the last couple of days I’ve become aware of a lot of swelling and tenderness in the area between my collarbone and armpits on both sides. It seems to follow the line of the top edges of my expanders, and it doesn’t look red or bruised or show any sign of infection, but it feels like it’s bothering me more not less as time goes on. The output from my drains has been dropping steadily, and I have no inflammation below the expanders or to the sides; but it feels like because this upper area isn’t reaching the drain inlets inside the breast pockets, I’m not getting any relief. I did call my home nursing service and they didn’t seem concerned about it; I’m not worried myself exactly, more just wondering if this is something that other people have experienced? And if so, does anyone have any suggestions? Thank you in advance