Hard and soft lumps after 3 weeks, is this normal? How can I tell it's not a seroma? (Photo)

It has been 3 weeks and 1 day since my tumescent liposuction. The procedure was really painful and for the first 2 weeks I was bruised in the back, I did upper and lower abdomen, flanks and love handles. I'm most concerned with a line under my belly button. Doctor said it could be a mark of pants or high panties. But I'm avoiding to use pants and all my panties all lower then the mark. It could be fat? The lump is soft not like the one in my left side that is really hard and painful to touch.