7 months post OP revision. Is this swelling or fat? Should I be worried at this point? (photos)

Although, based on your photographs, I understand your concerns, it is still too early to evaluate the long-term outcome of the procedure performed. This is best done one year (and sometimes longer) after the tummy tuck or revision procedure was carried out. It takes this amount of time for swelling to completely dissipate (as the veins and lymphatics returned to complete function) and for muscle tone to improve through abdominal wall strengthening exercises.  Patients who adhere to a healthy diet/exercise program tend to end up with the best outcomes.
 Having said the above, if you remain concerned about your abdominal wall appearance down the line, maneuvers such as additional liposuction and/or skin excision may be helpful.  If abdoimnal wall laxity is part of the problem,  further tightening of the abdominal wall muscles may be indicated.
 Best wishes.

Dear dresscode101,
I understand your concern. However, without a proper assessment it would be difficult to determine what is wrong. It is best that you visit your plastic surgeon for further assessment. Only after thorough examination you can get proper recommendations and advice.
Daniel Barrett, MD
Certified, American Board of Plastic Surgery
Member, American Society of Plastic Surgery
Member, American Society of Aesthetic Plastic Surgery

At 7months there shouldn't be much background swelling. Maybe just a little after a long day or heavy exercise.  It looks like excess fat is present which could be liposuctioned.