I got a full tummy tuck and hernia repair and liposution 4 months ago and my belly still look 5 months pregnant what can I do to get a flat stomache.

Diet, Exercise & ... Diet and exercise are almost always a great way to start, but you can also consult with the surgeon who performed your surgery and/or your primary care physician for additional, more specific advice. Best wishes!
Abdominal exercises. limit simple carbohydrates like white bread, pasta. abdominal and aerobic exercises.