1 year lump after Vaser chin liposuction. What can I do? (Photo)

I have done a vaser chin liposuction last year i got two lumps on both sides but the one on the right was smaller so its gone now but the one on the lift is still there and it hurts mildly. when i press the lump to push it inside it feels like small bubble. I've already consulted my doctor 6 months after; he told me it will go away by time but it still didn't. Some times when have strong facial expression my left neck and lips convuls for a while. Please help