Should I Go for a Smaller Chin Implant?

I have had a chin operation 3 weeks ago. Just after waking up I felt the left side of my chin swollen, and for the next 10 days, I had a LOT of pain. The left side of my chin and lip were also completely numb. The doctor proudly said he gave me the biggest implant I could get (20mm - nr. 4.2).

I felt it was enormous and I could actually feel the implant sticking up inside the left side of my mouth, and it was very painful. After being twice to the clinic they finally admitted that it as placed wrong and agreed to do a new correction operation within a couple of days.

It’s now been 6 days after the second operation. I don’t feel the implant inside my mouth anymore, but there is a lot of serious pain, and I am just as numb in the left side as before. It still feels like the implant is higher up in the left side then in the right. In right side, I have absolutely no swelling or pain at all.

Should I go for a smaller chin implant like 10-14mm? Would that bring back the feelings to my left side chin/lip? My normal smile is completely gone and I talk very strange because of the swelling and complete numbness. What is your advice?