Good Morning Hockeymumm,Thanks for reaching out.Post treatment issues with CoolSculpting are varied and tend to be mild. Most often we will see things like, swelling, occasional bruising, tenderness and "funny" sensations or numbness. In the short term these are well treated with rest, Tylenol or anti-inflammatories. There are prescription medications available that can help numb feelings or other odd sensations.On rare occasions, during or immediately after the procedure some people can feel a little light headed. That can be managed with monitoring, position changes and stopping the treatement.In regards to fever, it is not felt that the inflammation caused by CoolSculpting is sufficient to raise your temperature. If the discomfort is significant enough, and you are not taking full breaths, you can get a transient mild fever after any procedure (from a self limiting condition known as atelectasis). This resolves with deep breathing and walking about within a couple of days.It is cold and flu season in Ottawa right now, and there can be any number of reasons to have a fever. Get in touch with your treatment team and your family doctor. If the symptoms persist a more thorough workup might be in order.Hope you're feeling better soon.Take care.Dr Nodwell