Extreme swelling from Ultherapy. What could be causing this? (Photo)

This was my second time having Ultherapy done. The first was wonderful. It was painful, and experienced very little swelling. At six month I could completely see a more lifted and sculpted face. This second felt like torture. Both procedures I used gas for the pain. But after the second procedure, the swelling was unbelievable. I am over three months post Ultherapy and where I was swollen still looks terrible. I look older and the jawlines area is not tight but almost drippy still.