8 months post-op, why can I feel lumps under left side of my chest? (Photos)

I recently started noticing soft lumps under the left side of my chest, and it makes the nipple look a little puffy. It has been 8 months since my gyno surgery and the right side turned out pretty great. But since the last 1 month, I have been noticing these lumps and it makes me pretty anxious, could it be gyno coming back, it also hurts when I try to massage the left side area. As you can see in the photos, the right side looks perfectly flat, but the left side has that gyno look.