Truncal LE on contralateral side?

I'm 5 years out (yay!) from dx and in January noticed significant swelling above my collar bone on my left side (cancer was on the right). Had mammo and ultrasound and nothing noted, and doc couldn't feel any lymph nodes. Last week I noticed swelling in my armpit and beside my breast - again only on the left side. Doc doesn't feel anything unusual there, but it's very puffy. I"m going for another ultrasound hopefully this week.

Could this be lymphedema? Doc says it's on the wrong side so seems to be discounting it.

I did have DIEP reconstruction (right side) and a lift on the left side about 3 years ago.

Thanks for any insight you can provide.

The danger of bilateral truncal LE is what’s keeping me from seeking bilateral breast reductions. My feet blister at the slightest provocation and I formed large seromas at both the SNB site (which seroma exploded when the incision burst from the weight of a too-large breast) and the tumor cavity (slowly resorbing). I fear that I would at least become a seroma factory and might even end up with bilateral truncal AND arm LE.