How long must I wait before getting a tattoo after my abdomen lipo?

Thank you for sharing your doubts with us.  I think that is too early to get a tattoo. After surgery a normal healing process should succeed including swelling.  You should avoid any other external aggression to the skin during this process. 
Have a great day,  Best of Luck. 
Dr. Derby Sang Caputo, MD. Plastic Surgeon / Dominican Republic 

The minimum amount of time you should wait to get a tattoo is one month, and the ideal is three months. This allows sufficient time for swelling to decrease.  Keep in mind for your Liposuction decisions that the gold standard of treatment involves three important elements: VASER technology, PowerX liposuction cannulas, and Cool Helium Plasma skin tightening.

Five days postop is too soon to have a tattoo.  At this stage, expect some swelling, sensitivity, and discomfort from the liposuction site/s.Furthermore, take note that it would take about six months for the skin to fully redrape to the new contour.  This is an issue if you're getting a tattoo.Good luck and best wishes.