Slight Post treatment swelling can persist for 3 weeks. Sometimes even longer. The level that you describe is not normal. Contact your treating physician for detail.
Coolsculpting is a great procedure for reducing the bulge in the treated area. If you are having swelling nine days later I recommend you return to your treating physician for examination. Please let me know what the results are.
Coolsculpting induces programmed cell death of fat cells by selectively freezing them. In a small population of patients, there can be more swelling than in others. At 9 days post procedure, this should start to resolve.
You should start to see the decrease in swelling at this point. Did you have any bruising? I also have my patient use a little adjustable wait trimmer belt to provide some compression and support.