Lumps and Swelling After Tumescent Liposuction

I had tumescent liposuction on my stomach and love handles 18 days ago. On day 16, I became swollen and sore, almost so much that it looks like I did not have the procedure. I also noticed some hard lumps around where my pants fall. Are all these normal? Does it get worse before it gets better? I almost feel like I'm in more pain than I was right after the procedure. I am getting my arms done in a couple of weeks and am wondering if the same thing will happen.