Unexpected sounds in abdominal area after Tummy tuck?

Without seeing you in-person, I cannot say for certain.  However, given your description of "gurgling sounds" after drain removal in a setting of large diastasis and hernia repair, you most likely have a seroma (fluid-collection).  You should be wearing compression garment/binder.  Please follow-up with your plastic surgeon to be evaluated.  You may need aspiration of the fluid.  Best regards.

At 17 days following a tummy tuck and just 3 days post drain removal, you may have some retained fluid and/or air under your abdominoplasty flap.  The fluid/air may slosh or pop until it has fully resorbed.  This may take a few weeks.  Let your surgeon know about your situation they may want to check to see that it isn't something more serious such as an infection.  Best wishes, Dr. Lepore.