Why swelling and pain after exercise one year after tummy tuck? I lost 100 lbs 7 years ago the old fashioned way.

July 2015, had plastic surgery to remove excess skin & tummy tuck. I had been working out hard for 1.5 hours a day, 4/5 days a week before the surgery. 3 months ago, took abs class at gym. After class, my stomach swelled up. It feels very firm, hurts if work out hard. Surgeon says need to have laser therapy $250 a session for swelling to go down. I am really frustrated, I am committed to a healthy lifestyle that includes regular exercise.

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