Burning/stinging sore pain after vaser. Any suggestions?

I had vaser on the flanks 12 days ago and everything went ok. The first week I was swollen and sore but not in pain. Then a few days again I was sitting down to wee and got a horrible stinging burning pain which appears to be around one of my incisions. So it is still happening over the last few days and it is getting a lot more frequent. There is no oozing, redness around the area. I'm worried as I had to stop my car today it was like a electric shock! It is only in this one area. Any ideas??