Abdominal Swelling 5 Years After A Tummy Tuck and Then Full Lower Body Lift?

I had two children by csection, 11 years later I had a tummy tuck in October 2006 with minor swelling. In May 2007 I had a lower body lift and my surgeon revised my original tummy tuck, 2 months later I left the country and I am still swelling more than 5 years later with prominent abdominal distention. Doctors (not surgeons) have run every blood test and ultrasounds with no apparent cause. Could this be a psudeobirsa? If so, what tests would a surgeon do to diagnose it?