I had cool sculpting one week ago, my abdomen almost feels hard to the touch?

I have seen this in many patients who have gotten fibrosis/scarring or reactive hyperplasia. This may need VASER liposuction for improvement.  This also could be post procedural swelling and will take weeks to a few months to resolve.  I suggest a formal consultation with a dermatalogical surgeon to accurately diagnose your issue.  Try Exilis and cellutone to speed up the healing. Best, Dr. Emer

Swelling can be normal but if you're feeling "hardness" it can't hurt to have your provider take a look at you. You don't mention what kind of applicator or how many on the abdomen you had but regardless, swelling, tenderness is normal, but not hardness. I'm sure it's probably fine but can't hurt to place a call to be seen. Best of Luck. 

It sounds as though you are having a very typical post CoolSculpting treatment experience.  We always inform our CoolSculpting patients about what to expect after the treatment.  Each person will have their own variations on the degree to which they experience these feelings, but there are some very consistent and expected physical stages that can be counted on.  
Here is how it goes:  First there will be mild discomfort, numbness and itching.  Then, the area will become swollen, and this swelling may very well appear to feel hard,  due to the accumulation of fluid and the numbness.  This swelling is a normal and natural part of the healing process.  It is important to let this process take its coarse and not to take anti-inflammatory medications. The body is doing it's job to remove the dead fat cells from the area treated with CoolSculpting.  
After a few days, or possibly a week, the swollen area may begin to experience greater discomfort and even pain, sometimes sharp.  As I mentioned earlier, each person experiences this discomfort to differing degrees.  However, there are some patients who find that the discomfort is very difficult to tolerate. We recommend alternating with ice and heat, using arnica gel, taking Tylenol, and wearing compression garments.  Of coarse, there are those who require stronger pain relief, and occasionally a Rx is required.   The period of greatest discomfort usually only lasts a few days.  For most patients, the pain has subsided by around the 11th day post treatment.  There those who have a longer, more drawn out experience with the pain, but these cases are less frequent.
For the majority of patients, this greater degree of discomfort is experienced when treating the lower abdomen with the original CoolMax deep suction applicator.  We now highly favor using the new CoolMax Advantage Plus applicator.  Our experience has been that the results are better, the treatment itself is infinitely more comfortable,taking only 45 minutes as opposed to an hour, and the post treatment discomfort is minimal.