Why am I swollen 3x my size and in so much pain after 1st Vanquish treatment?

Will the same side effects happen after each treatment? I had my 1st vanquish treatment 3 days ago. On stomach and it was borderline unbearable but back was pain-free. I was in terrible pain after and the next day my fat deposit was swollen to 3x it’s normal size. I couldn’t exercise for days, still hurts to walk even. If I continue treatment, should I expect the same level of swelling and pain each time? I don’t have any hard lumps and the provider used the Z-wave. I don’t get it, I look huge and am so sore. What could have gone wrong?