Post Decompression Surgery- 4 Weeks - Symptom

Have a dead spot in my right knee to the outside edge. Have an appointment with the GP the day after tomorrow. It is a numb spot and causing no pain. Friends have had blood clots before and a little concerned but they have found them extremely painful and this is causing no pain just numbness...

Thoughts??

It doesn't sound like a clot to me. Is it red or warm to the touch? Clots usually are very painful. I honestly don't even think it is a symptom of the chiari unless you were having it pre-surgery. Hopefully you can get some answers!